Authorities announced that 32-year-old Reynald Biamby of Brockton is now officially indicted for first-degree murder in connection with the fatal stabbing of 24-year-old Rose Lacroix of Mattapan. The deadly incident occurred in the early morning hours of November 23, 2025, in a residence located in the Brockton-Mattapan region of Massachusetts.
According to the indictment detailed by the Pierce County Court, investigators allege that Biamby attacked Lacroix during a domestic dispute at her apartment. The struggle escalated and left Lacroix fatally wounded by a knife. Police say Biamby fled the scene but was arrested later that day after a warrant was issued. He now faces murder charges and is being held without bail.
What began as an argument between intimate partners reportedly escalated into violence. Sources say Biamby and Lacroix had been in a relationship, and at the time of the incident, an altercation began inside the residence. The victim apparently tried to retreat—and that’s when the defendant allegedly used a knife to inflict a fatal wound.
Investigators from the Brockton Police Department and Massachusetts State Police are reviewing cell-phone communications, surveillance from condo entrances and witness statements. While the defendant has made no public statement, Lacroix’s family released a brief message stating: “She was full of life and the world lost a bright star.”
The indictment signifies the culmination of the investigative phase and transition into formal prosecution. Biamby is scheduled for arraignment next week. Prosecutors say additional counts, such as domestic assault and weapon violations, may be added to the current murder charge.
The close-knit community of Mattapan and the neighboring suburb of Brockton are reeling from the loss. Friends described Lacroix as a dedicated caregiver and cherished sibling who had just begun her nursing studies. Her unexpected death has revived concerns about domestic violence in the region.
Local domestic violence shelters and advocacy groups are calling for stronger early-intervention efforts. “This tragedy reminds us that when arguments escalate behind closed doors, the outcomes may be fatal,” said one social-service director. While neighbors say policing in the area is responsive, they emphasize the need for education, safe housing options and accessible helplines.
When a crime like this occurs, criminal charges only tell part of the story. Survivors, families and loved ones often face emotional shocks, medical bills, legal expenses and long-term trauma. That’s why civil legal options can be vital in the path toward healing and accountability.
At Haggard Crime Victim Attorney, a division of The Haggard Law Firm, attorney Michael Haggard, Esq. leads a team that supports victims of violent crime—including domestic violence, stabbings, assaults and wrongful death. We provide:
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In cases of fatal domestic violence and stabbings, families may pursue wrongful death claims to recover compensation for funeral expenses, lost support and emotional suffering. Additionally, if the incident occurred in a residence or rental unit where security was inadequate, or if there were prior warnings ignored by property management, civil claims against landlords or housing providers may be possible.
If your loved one was injured or killed because of domestic assault or a stabbing event, don’t wait. Contact us to explore your legal rights and next steps. Let our experienced team help you seek justice and support.
The Massachusetts district attorney’s office notes the case remains in the investigative stage even after the indictment. Police are urging anyone with additional information—text messages, audio recordings, surveillance footage from entryways or nearby units—to come forward. Witnesses can contact the Brockton Police Department’s homicide division at (508) 580-3805.
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