Man pleads not guilty, held without bail, after more details released in fatal Plymouth County stabbing

BROCKTON — A Massachusetts man was arraigned today in Brockton District Court following a fatal domestic violence incident on Monday evening in Brockton, according to Plymouth County District Attorney Timothy Cruz.

44-year-old Reynald Biamby of Mattapan faces one count of murder, to which he pleaded not guilty and was ordered held without bail.

Brockton Police received a 911 call and responded to 341 Centre Street. Upon arrival, officers and emergency personnel discovered the body of a deceased woman, later identified as 36-year-old Rose Lacroix of Mattapan.

Biamby was found with injuries and was transported to a Boston hospital for treatment.

Brockton Police contacted Massachusetts State Police assigned to the Plymouth County District Attorney’s Office, initiating an investigation.

During an interview at the hospital, Biamby told officers that he and Lacroix were engaged in a verbal argument that escalated when she stabbed him with a knife. He claimed they struggled over the weapon, and he ultimately used it to fatally stab her in the neck. He admitted to not attempting to leave the situation after gaining control of the knife.

Following the investigation, detectives obtained an arrest warrant for Biamby, who was taken into custody after his hospital release.

He is scheduled to appear in court on August 5, 2025, for a probable cause hearing.