Ahtziri Y. Cardenas-Torreros, 26, was found dead from sharp force injuries in a Quincy apartment on December 13, 2025. Her boyfriend, Guiovani G. Garcia Chagollan, 34, was also found injured with stab wounds and hospitalized after an apparent suicide attempt. He was arrested and charged with murder and assault with a dangerous weapon. The case is pending with a probable cause hearing scheduled for January.
Country: United States
State/Province: Massachusetts, United States
City/Region: Quincy
Incident Type: Domestic Violence Homicide
Relationship Status: Dating
Relationship Duration:
Incident Date: Dec. 13, 2025
Relationship Origins:
Relationship Stages:
Contributing Factors:
Red Flags:
Motives:
Relationship Outcomes:
How the relationship or connection began.
Important relationship phases recorded for this case.
Reported red flags or early concern points.
Contributing factors and possible motives from the available sources.
2025-12-13
Recorded relationship or case outcome.
English labels are shown first. Original-language titles are preserved for source verification.
Original language: English
Man arrested, accused of killing girlfriend in Quincy apartment
Domestic Violence
The incident involves a domestic violence homicide where a boyfriend allegedly killed his girlfriend, followed by an attempted suicide. The relationship was intimate and dating-based, with escalating violence culminating in fatal sharp force injuries. The suspect's suicide attempt indicates severe emotional distress and possible remorse or escape.
Guiovani G. Garcia Chagollan was arrested and charged with murder and assault with a dangerous weapon. He pleaded not guilty and remains hospitalized after a suicide attempt. A probable cause hearing is scheduled for January. Police and prosecutors have referred domestic violence resources to the public. Investigation is ongoing.
No significant confusion reported; suspect identified and charged. The suspect's suicide attempt complicates immediate interrogation and court proceedings.
On December 13, 2025, Quincy police responded to an apartment where both victim and suspect were found with stab wounds. The victim was pronounced dead at the scene. The suspect was hospitalized after a suicide attempt. Charges were filed based on evidence and injuries. The relationship was dating-based, and the motive appears to be elimination of the romantic partner.
High risk due to escalation to lethal violence and suicidal behavior by the suspect. Prior domestic conflict and threats likely contributed to the fatal outcome.
Domestic violence can escalate rapidly to lethal outcomes. Suicide attempts by suspects may follow homicide attempts. Early intervention and awareness of escalation patterns are critical. Public resources for domestic abuse victims are vital.
Escalation of violence and threats within the relationship, as well as the suspect's suicidal ideation, were key early signals.
The presence of stab wounds on both victim and suspect, and the suspect's hospitalization after a suicide attempt, helped connect the case as a domestic violence homicide followed by attempted suicide.
Physical evidence of stab wounds and the suspect's injuries were strongest. Police response and victim pronouncement at the scene provided critical evidence.
Not reported.
No follow-up reports available beyond initial arrest and court scheduling.
Exact motive details and relationship history remain unclear. The suspect's mental state and full account of events await further investigation.