Authorities in Bristol County have taken a 25-year-old woman into custody in connection with a weekend shooting at a residential gathering in Taunton that resulted in the death of a young Brockton resident and left seven other individuals injured by gunfire. The arrest marks a major development in an intensive multi-day investigation that mobilized local and regional law enforcement agencies across southeastern Massachusetts.
The suspect, identified as Sienna Barboza of New Bedford, is facing severe criminal charges, including one count of murder and seven counts of armed assault with intent to murder. The formal charges were announced in a written release issued on Wednesday evening, September 9, by Bristol County District Attorney Thomas M. Quinn, III, whose office is directing the ongoing prosecution.
The violent incident unfolded during the early morning hours of Sunday, September 6, at a private residence located at 261 Weir Street in Taunton. What began as a social gathering abruptly descended into chaos when gunfire erupted on the property, striking a total of eight people who were attending the event.
Among those hit was 22-year-old Zirovick Depina, a resident of Brockton. Despite emergency intervention following the chaotic scene, Depina succumbed to his injuries and was officially pronounced dead later that Sunday morning. The sudden loss has sent ripples of grief through his home community of Brockton and neighboring municipalities.
In addition to the fatal shooting of Depina, seven other attendees suffered gunshot wounds during the barrage. Emergency responders arriving at the Weir Street property were confronted with a complex mass-casualty scene, requiring immediate triage and the rapid coordination of medical transport to regional healthcare facilities for the wounded survivors.
Investigators from the Taunton Police Department and state troopers assigned to the Bristol County District Attorney's Office worked continuously in the days immediately following the shooting. Forensic teams secured the scene outside and inside the Weir Street home, collecting physical evidence, analyzing ballistics, and conducting extensive interviews with witnesses and surviving victims to identify the shooter.
The charges filed against Barboza reflect the grave nature of the incident. In the Commonwealth of Massachusetts, armed assault with intent to murder is among the most serious felony offenses in the state's penal code, carrying substantial mandatory prison time upon conviction. The presence of seven separate assault counts underlines the lethal threat faced by every individual caught in the line of fire that morning.
The legal proceedings ahead will focus on establishing the sequence of events and motives that precipitated the gunfire at the gathering. As Barboza enters the court system, prosecutors from District Attorney Quinn's office will be tasked with presenting physical evidence and witness testimony to support the murder charge alongside the seven counts of armed assault.
The geographic footprint of the case—connecting New Bedford, where the suspect resides, Brockton, the hometown of the deceased victim, and Taunton, where the shooting took place—highlights the regional interconnections of communities throughout Bristol and Plymouth counties. Incidents of this magnitude often require seamless cooperation among municipal departments that regularly share intelligence on regional violent crime.
For the city of Taunton, the violence on Weir Street has left neighborhood residents and local leaders grappling with the aftermath of an exceptionally violent episode in an otherwise quiet residential corridor. Large social gatherings that devolve into gun violence pose severe risks not only to participants but also to surrounding neighborhoods and first responders answering emergency calls.
Community advocates and public safety experts frequently point to the destructive ripple effects that high-casualty shootings inflict on local populations. Beyond the physical trauma sustained by the wounded, the psychological toll on witnesses, families, and neighbors often persists long after crime scene tape is cleared and active police cruisers leave the neighborhood.
As the judicial process moves forward, Barboza is expected to appear before a judge for formal arraignment, where official pleas will be entered and conditions of custody will be determined. The court will also address scheduling for preliminary hearings, discovery exchanges, and the assignment of legal counsel.
Investigators continue to urge anyone who was present at 261 Weir Street during the early morning hours of September 6 or who possesses digital recordings, photographs, or relevant information regarding the circumstances surrounding the shooting to cooperate with law enforcement.
The case remains an active prosecution under the Bristol County District Attorney's Office as authorities seek accountability for the death of Zirovick Depina and the life-altering injuries sustained by the seven surviving victims.
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