Case timeline
Chronological reconstruction – Forensic investigation
STAGE1
STAGE 2
STAGE 3
STAGE 4
STAGE 5
Event preparation (before the party)
Events at the party prior to the homicide
KEY CRIME EVENT
Minutes following consumption
Start of the party
June 5, 2026 (approximate)
June 6, 2026
June 6, 2026
June 6, 2026
June 6, 2026
Case timeline
Chronological reconstruction – Forensic investigation
STAGE 6
STAGE 7
STAGE 8
STAGE 9
STAGE 10
Death
Medico-forensic findings
Police investigation
Evidence collection
Toxicological analysis
June 6, 2026
June 7, 2026
June 7, 2026
June 7, 2026
June 7, 2026
COMPARATIVE CHART
Transfer to the hospital
FACT The victim is transported to a nearby hospital.
EVIDENCE
Hospital records referenced in the case.
ANALYSIS
The deterioration continues during transport.
FACT Internal examination The following clues are detected: cerebral edema-swelling of the brain caused by fluid buildup. pulmonary edema-when the lungs are filled with water that makes it hard to breathe. vascular congestion gastric irritation EVIDENCE Autopsy. ANALYSIS Findings related with poisoning from an ingested substance.
Internal examination
Transfer of evidence to the laboratory
FACT:
Transfer of evidence to the laboratory. The items were sent to the laboratory at 11:04 p.m.
EVIDENCE:
Chain of custody record.
ANALYSIS:
Forensic chemical analysis begins.
Detention for Questioning
FACT Detention for questioning The three individuals with access to the bottle are held for interview: · Montserrat Luján · Carlos Izquierdo · Felipe García EVIDENCE Record in the Initial Police Report (IPR). ANALYSIS The aim is to reconstruct the chain of handling of the drink..
General service drinks
FACT:
General beverage service: Various alcoholic beverages are prepared during the party.
EVIDENCE:
Used glasses found at the scene.
ANALYSIS:
The serving process is a time when the beverage could have been tampered with.
Luis Miranda’s arrival at the birthday party
FACT:
Luis Miranda’s arrival at the event: Luis Miranda arrives at the Los Arcos event hall to attend the birthday party.
EVIDENCE:
Testimonies from attendees and the record in the Initial Police Report (PIR).
ANALYSIS:
It is established that the victim entered the venue in a normal state, prior to consuming the beverage.
Onset of symptoms
FACT Onset of symptoms Luis Miranda presents severe symptoms:
- vomiting
- physical collapse
- difficulty breathing
EVIDENCE Statements from attendees. ANALYSIS The rapid onset of symptoms suggests exposure to toxic alcohol.
Start of criminal investigation
FACT Start of criminal investigation. Due to suspicion of poisoning, the case is investigated as a possible homicide. EVIDENCE Record in the Initial Police Report (IPR). ANALYSIS The protocol for a potentially criminal scene is activated.
Death of the victim
FACT Death of the victim. Luis Miranda dies after suffering depression of the central nervous system and respiratory failure. EVIDENCE Forensic Medical Report. ANALYSIS The cause of death is acute intoxication of toxic origin
Preparation of the victim’s drink
FACTPreparation of the victim’s drink Carlos Izquierdo takes the tequila bottle and prepares a drink. EVIDENCE Carlos’s statement. ANALYSIS This moment represents one of the critical points of the investigation.
Preparation of the drinks area
FACT: Preparation of the drinjs area An area is set up for preparing drinks: a 3 × 2-meter bar and a 7 × 5-meter storage area. EVIDENCE: Description recorded in the Scene Report (SSR). ANALYSIS: The bar will later become the focal point of the incident.
Bartender´s setup
FACT
The bartender's setup. The bartender, Felipe García, organizes his equipment:
- mixing glass,
- jigger,
- tongs,
- stainless steel tools,
- ice bucket.
EVIDENCE
Tools found at the scene.
ANALYSIS
Felipe has constant access to the drinks during the event.o.
Delivery of the drink to the victim
FACT Delivery of the drink to the victim The prepared glass is given to Luis Miranda. EVIDENCE Witness statements. ANALYSIS This marks the beginning of the possible poisoning.
Start of the celebration
FACT:
Start of the celebration: A private birthday party begins with several guests in attendance.
EVIDENCE:
Recorded in the Initial Police Report (PIR).
ANALYSIS:
The presence of multiple people increases the complexity of the investigation.
Formal collection of samples
FACT The following are identified as primary evidence:
- tequila bottle (with remaining contents)
- liquid contained in the bottle
- used glasses (shots and mixing glass)
EVIDENCE
Official listing in the Scene Report (SSR).
ANALYSIS
These items represent the main potential sources of contamination.
Request for chemical analysis
FACT A Forensic Toxicology Report (TFR) is requested.
EVIDENCE
Laboratory request record.
ANALYSIS
The objective is to identify methanol or other toxic substances.
General Service of drinks
FACT:
Secured items collected: tequila bottle (40% remaining):
- cocktail glass,
- bar tools,
- container with ice
EVIDENCE:
Listed in the SSR.
ANALYSIS:
All items are related to the preparation of the drink.
Securing the scene
FACT Securing the scene. The police cordon off the bar area. EVIDENCE Record in the SSR. ANALYSIS The bar is considered the main location of the incident.
Request for medical assistance
FACT Guests request emergency services. EVIDENCE Police report. ANALYSIS The situation is considered critical from the very first minutes.
Consumption of the drink
FACT Consumption of the drink Luis Miranda drinks the contents of the glass. EVIDENCE Confirmed by witnesses. ANALYSIS This is the likely point at which the toxic substance was ingested.
External examination of the body
FACT External examination of the body No traumatic injuries are identified. EVIDENCE Forensic medical report. ANALYSIS The death is not related to physical violence.
BUY THE BOTTLE
FACT: Purchase of the bottle. Montserrat Luján buys a 750-ml bottle of reposado tequila at a local liquor store for the birthday. EVIDENCE: Entry noted in the Initial Police Report (PIR). ANALYSIS: Montserrat is the first person to have physical control of the bottle.
Observation of the bottle´s contens
FACT:
Observation of the bottle’s contents. Researchers note: strong chemical odor; slightly different color.
EVIDENCE:
Observation documented at the scene.
ANALYSIS:
This suggests possible adulteration of the alcohol.
Placing the bottle on the bar
FACT:
Placement of the bottle on the bar. The tequila bottle is placed in the drink preparation area.
EVIDENCE:
The bottle was later found in that area.
ANALYSIS:
From this point on, the bottle is accessible to several people.
Transporting the bottle to the party hall
FACT: Transport of the bottle to the party hall. The bottle is transported to the Los Arcos event venue in San Miguel de Allende. EVIDENCE: Statement by Montserrat Luján. ANALYSIS: This transport represents a potential first point of tampering with the alcohol.
Incorporating the victim into the party
FACT:
The victim was part of the party; Luis Miranda mingled with the guests at the event.
EVIDENCE:
Testimonies from attendees.
ANALYSIS:
This confirms that the victim showed no symptoms prior to consumption.
Status of results
FACT
Status of results
Toxicological results are not yet available.
EVIDENCE
TFR report pending.
ANALYSIS
The investigation is in a preliminary phase.
People with access to the bottle
FACT:
People with access to the bottle. Three individuals have direct access: Montserrat Luján, Carlos Izquierdo, and Felipe García.
EVIDENCE:
Statements collected by the police.
ANALYSIS:
These individuals become the prime suspects.
Case timeline
Christopher Mqcias
Created on March 13, 2026
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Transcript
Case timeline
Chronological reconstruction – Forensic investigation
STAGE1
STAGE 2
STAGE 3
STAGE 4
STAGE 5
Event preparation (before the party)
Events at the party prior to the homicide
KEY CRIME EVENT
Minutes following consumption
Start of the party
June 5, 2026 (approximate)
June 6, 2026
June 6, 2026
June 6, 2026
June 6, 2026
Case timeline
Chronological reconstruction – Forensic investigation
STAGE 6
STAGE 7
STAGE 8
STAGE 9
STAGE 10
Death
Medico-forensic findings
Police investigation
Evidence collection
Toxicological analysis
June 6, 2026
June 7, 2026
June 7, 2026
June 7, 2026
June 7, 2026
COMPARATIVE CHART
Transfer to the hospital
FACT The victim is transported to a nearby hospital. EVIDENCE Hospital records referenced in the case. ANALYSIS The deterioration continues during transport.
FACT Internal examination The following clues are detected: cerebral edema-swelling of the brain caused by fluid buildup. pulmonary edema-when the lungs are filled with water that makes it hard to breathe. vascular congestion gastric irritation EVIDENCE Autopsy. ANALYSIS Findings related with poisoning from an ingested substance.
Internal examination
Transfer of evidence to the laboratory
FACT: Transfer of evidence to the laboratory. The items were sent to the laboratory at 11:04 p.m. EVIDENCE: Chain of custody record. ANALYSIS: Forensic chemical analysis begins.
Detention for Questioning
FACT Detention for questioning The three individuals with access to the bottle are held for interview: · Montserrat Luján · Carlos Izquierdo · Felipe García EVIDENCE Record in the Initial Police Report (IPR). ANALYSIS The aim is to reconstruct the chain of handling of the drink..
General service drinks
FACT: General beverage service: Various alcoholic beverages are prepared during the party. EVIDENCE: Used glasses found at the scene. ANALYSIS: The serving process is a time when the beverage could have been tampered with.
Luis Miranda’s arrival at the birthday party
FACT: Luis Miranda’s arrival at the event: Luis Miranda arrives at the Los Arcos event hall to attend the birthday party. EVIDENCE: Testimonies from attendees and the record in the Initial Police Report (PIR). ANALYSIS: It is established that the victim entered the venue in a normal state, prior to consuming the beverage.
Onset of symptoms
FACT Onset of symptoms Luis Miranda presents severe symptoms:
- vomiting
- physical collapse
- difficulty breathing
EVIDENCE Statements from attendees. ANALYSIS The rapid onset of symptoms suggests exposure to toxic alcohol.Start of criminal investigation
FACT Start of criminal investigation. Due to suspicion of poisoning, the case is investigated as a possible homicide. EVIDENCE Record in the Initial Police Report (IPR). ANALYSIS The protocol for a potentially criminal scene is activated.
Death of the victim
FACT Death of the victim. Luis Miranda dies after suffering depression of the central nervous system and respiratory failure. EVIDENCE Forensic Medical Report. ANALYSIS The cause of death is acute intoxication of toxic origin
Preparation of the victim’s drink
FACTPreparation of the victim’s drink Carlos Izquierdo takes the tequila bottle and prepares a drink. EVIDENCE Carlos’s statement. ANALYSIS This moment represents one of the critical points of the investigation.
Preparation of the drinks area
FACT: Preparation of the drinjs area An area is set up for preparing drinks: a 3 × 2-meter bar and a 7 × 5-meter storage area. EVIDENCE: Description recorded in the Scene Report (SSR). ANALYSIS: The bar will later become the focal point of the incident.
Bartender´s setup
FACT The bartender's setup. The bartender, Felipe García, organizes his equipment:
- mixing glass,
- jigger,
- tongs,
- stainless steel tools,
- ice bucket.
EVIDENCE Tools found at the scene. ANALYSIS Felipe has constant access to the drinks during the event.o.Delivery of the drink to the victim
FACT Delivery of the drink to the victim The prepared glass is given to Luis Miranda. EVIDENCE Witness statements. ANALYSIS This marks the beginning of the possible poisoning.
Start of the celebration
FACT: Start of the celebration: A private birthday party begins with several guests in attendance. EVIDENCE: Recorded in the Initial Police Report (PIR). ANALYSIS: The presence of multiple people increases the complexity of the investigation.
Formal collection of samples
FACT The following are identified as primary evidence:
- tequila bottle (with remaining contents)
- liquid contained in the bottle
- used glasses (shots and mixing glass)
EVIDENCE Official listing in the Scene Report (SSR). ANALYSIS These items represent the main potential sources of contamination.Request for chemical analysis
FACT A Forensic Toxicology Report (TFR) is requested. EVIDENCE Laboratory request record. ANALYSIS The objective is to identify methanol or other toxic substances.
General Service of drinks
FACT: Secured items collected: tequila bottle (40% remaining):
- cocktail glass,
- bar tools,
- container with ice
EVIDENCE: Listed in the SSR. ANALYSIS: All items are related to the preparation of the drink.Securing the scene
FACT Securing the scene. The police cordon off the bar area. EVIDENCE Record in the SSR. ANALYSIS The bar is considered the main location of the incident.
Request for medical assistance
FACT Guests request emergency services. EVIDENCE Police report. ANALYSIS The situation is considered critical from the very first minutes.
Consumption of the drink
FACT Consumption of the drink Luis Miranda drinks the contents of the glass. EVIDENCE Confirmed by witnesses. ANALYSIS This is the likely point at which the toxic substance was ingested.
External examination of the body
FACT External examination of the body No traumatic injuries are identified. EVIDENCE Forensic medical report. ANALYSIS The death is not related to physical violence.
BUY THE BOTTLE
FACT: Purchase of the bottle. Montserrat Luján buys a 750-ml bottle of reposado tequila at a local liquor store for the birthday. EVIDENCE: Entry noted in the Initial Police Report (PIR). ANALYSIS: Montserrat is the first person to have physical control of the bottle.
Observation of the bottle´s contens
FACT: Observation of the bottle’s contents. Researchers note: strong chemical odor; slightly different color. EVIDENCE: Observation documented at the scene. ANALYSIS: This suggests possible adulteration of the alcohol.
Placing the bottle on the bar
FACT: Placement of the bottle on the bar. The tequila bottle is placed in the drink preparation area. EVIDENCE: The bottle was later found in that area. ANALYSIS: From this point on, the bottle is accessible to several people.
Transporting the bottle to the party hall
FACT: Transport of the bottle to the party hall. The bottle is transported to the Los Arcos event venue in San Miguel de Allende. EVIDENCE: Statement by Montserrat Luján. ANALYSIS: This transport represents a potential first point of tampering with the alcohol.
Incorporating the victim into the party
FACT: The victim was part of the party; Luis Miranda mingled with the guests at the event. EVIDENCE: Testimonies from attendees. ANALYSIS: This confirms that the victim showed no symptoms prior to consumption.
Status of results
FACT Status of results Toxicological results are not yet available. EVIDENCE TFR report pending. ANALYSIS The investigation is in a preliminary phase.
People with access to the bottle
FACT: People with access to the bottle. Three individuals have direct access: Montserrat Luján, Carlos Izquierdo, and Felipe García. EVIDENCE: Statements collected by the police. ANALYSIS: These individuals become the prime suspects.