Investigators say officers answered a 911 call, found a 25-year-old Weymouth man with a knife and in distress, and are still reviewing what led to the shooting.
WEYMOUTH, MA — A Weymouth police officer shot and killed a 25-year-old man at Webb Memorial State Park after officers responded around 4 p.m. Wednesday to a 911 call for service at the waterfront park on River Street, authorities said.
Norfolk County prosecutors identified the man Thursday as Sean R. Barry of Weymouth. The shooting has drawn scrutiny because officials have released only a narrow outline of what happened in the moments before the officer fired. Prosecutors say Barry was holding a knife and appeared to be in distress when officers arrived, and that the officer gave first aid before Barry was taken to South Shore Hospital, where he died. The case is now being handled by Massachusetts State Police assigned to the Norfolk County District Attorney’s Office, the standard process in Massachusetts for fatal police shootings.
The known timeline remains short but clear in its broad outlines. Prosecutors said Weymouth officers were called to Webb Memorial State Park at about 4 p.m. Wednesday after a 911 report. The park sits on a narrow peninsula off River Street in North Weymouth and is known for walking paths, fishing spots and open views of Hingham Bay and the Boston skyline. When officers reached the scene, according to District Attorney Michael W. Morrissey’s office, they encountered Barry with a knife. Authorities said he appeared to be in distress. At some point soon after that encounter, one officer fired and struck him. Weymouth police reported the shooting to Massachusetts State Police at about 4:15 p.m., according to earlier accounts from state and local officials. Morrissey’s office said the officer immediately began first aid before Barry was taken by ambulance to South Shore Hospital in critical condition. He was later pronounced dead.
What remains unknown is central to the case. Prosecutors have not said how many officers were at the park, how many shots were fired, how close Barry was to officers when gunfire erupted, or what commands, if any, were given before the shooting. They also have not released the name of the officer involved. Officials have not said whether body-worn camera footage exists, whether any witnesses recorded the encounter, or what the original 911 caller reported before police arrived. Those missing details matter because they will shape the legal and public review of whether the use of deadly force was justified. For now, the official account consists mainly of three points: officers answered a service call, Barry had a knife, and he appeared to be in distress. Beyond that, the public record is still thin. Prosecutors have said only that there is no ongoing threat to public safety and that the investigation is continuing.
The setting adds to the shock felt in Weymouth. Webb Memorial State Park is a state-managed public park on Weymouth Neck, a quiet shoreline area more often associated with runners, walkers and families than with violent confrontations. State and federal park descriptions call it a peninsula extending into Hingham Bay with trails, picnic areas and harbor views. On Wednesday evening, that routine was replaced by flashing lights, crime-scene activity and a long closure of the park while investigators worked. NBC Boston reported that troopers from the Norfolk State Police detective unit, the crime scene services section and the firearms identification section responded to the scene. That broad response signals that investigators are collecting physical evidence as well as reconstructing the sequence of events. Fatal officer-involved shootings are usually examined through witness interviews, scene measurements, firearm review, medical findings and any available video. In this case, officials have not yet said when those findings might be released or whether a fuller narrative will come through a public statement, court filing or prosecutorial report.
The legal process now moves on two tracks. First, state police detectives assigned to the district attorney will continue the criminal investigation into the shooting itself. That review typically focuses on the actions of the officer, the threat officers say they faced, and whether the evidence matches witness and officer statements. Second, Barry’s death may bring separate administrative review by the Weymouth Police Department or town officials, though no such steps had been publicly described by Thursday. No charges have been announced against anyone. Officials also have not said whether an autopsy has been scheduled or completed, though that would be a routine step in a fatal shooting inquiry. Investigators are also expected to review dispatch records, hospital timelines and any officer reports completed after the shooting. The next milestone is likely a more detailed statement from prosecutors or police once interviews and evidence collection are further along, but no public briefing had been scheduled by late Thursday.
Residents and park users described a scene that felt sudden and deeply unsettling. Sami Davis, who saw the police response, told WHDH that officers “rushed in” and that it was “very clearly something serious going on.” Another park user, Diana Laenen, said the shooting changed how she thought about returning to the area for a run. “It’s really scary,” she said. Those reactions reflect the tension that often follows a police shooting involving a person described as being in crisis. Even with limited official details, the case has already raised two immediate questions in the community: what exactly happened between first contact and the gunfire, and whether there were other ways to bring the encounter to an end without someone dying. Authorities have not answered those questions yet, and there has been no public release of evidence that would allow an independent reconstruction of the final moments before Barry was shot.
As of Thursday evening, the basic facts were settled but the most important ones were still missing. Sean R. Barry, 25, was dead, one Weymouth officer had fired at Webb Memorial State Park, and state investigators were still working to explain the encounter that began with a 911 call around 4 p.m. Wednesday.
Author note: Last updated March 20, 2026.