Seafood worker claims self-defense in Nantucket stabbing incident caught on surveillance video
A seafood delivery employee facing serious assault charges after a stabbing incident near Nantucket’s ferry terminal maintains that surveillance footage proves he was defending himself against an unprovoked attack. Kemar Downer, 40, who works for Sayle’s Seafood, appeared in Nantucket District Court on Wednesday morning to face two counts of assault and battery with a dangerous weapon causing serious bodily injury. His attorney asserts that video evidence clearly demonstrates the altercation that unfolded Tuesday morning in the island’s busy downtown area was an act of self-preservation.
Defense attorney Rob Moriarty told reporters that the surveillance recording supports his client’s account entirely. The footage allegedly shows a larger man, identified as a Reis Trucking employee, approaching Downer from behind and launching a sudden assault. According to Moriarty, this constitutes “complete and total self-defense” under Massachusetts law.
Attorney describes unprovoked assault captured on camera
The defense lawyer provided detailed descriptions of what the surveillance video allegedly reveals. Moriarty stated that the alleged victim approached Downer without warning and struck him multiple times in the back of the head. The surprise attack reportedly knocked the seafood worker forward into an object, though the attorney could not specify exactly what it was from viewing the footage. The assault continued with multiple kicks while Downer was in a vulnerable position, according to the defense account.
Moriarty indicated that the confrontation stemmed from a dispute involving a woman, as reported by The Inquirer and Mirror. The attorney emphasized the size disparity between the two men, noting that the alleged victim was considerably larger than his client. Only after sustaining repeated blows and kicks did Downer retrieve a pocketknife from his waistband, the defense claims.
Incident unfolds in heart of tourist district
The violent encounter erupted at approximately 10:23 a.m. Tuesday on South Beach Street, a central downtown corridor situated between Broad Street and Oak Street. This location sits just steps from the Steamship Authority ferry terminal, where tourists regularly arrive carrying beach gear and luggage before dispersing throughout Nantucket’s historic cobblestoned neighborhoods. Police officers responded rapidly to emergency calls reporting a stabbing in progress.
According to police reports cited by local media, Downer was making a juice delivery to The Juice Bar, a popular ice cream establishment on the island, when the confrontation began. The defendant reportedly told investigators he did not know his attacker, though both men originated from the same parish in Jamaica. After being punched in the head from behind, Downer said he turned around, was kicked, and then pulled out a pocketknife, swinging it toward the other man two or three times.
- The injured worker suffered what sources believe was a punctured lung
- A 2.5-inch open laceration on his left arm will likely require surgery
- The wound is expected to leave significant permanent scarring
- The victim received immediate treatment at the scene before hospital transport
Witness accounts add complexity to case
A witness statement included in the police report adds another dimension to the incident. According to this account, Downer entered The Juice Bar following the initial altercation, apparently seeking another knife in case his attacker returned. The witness reported that Downer grabbed a kitchen knife measuring between 10 and 12 inches before employees intervened and removed the weapon from him. This detail could complicate the self-defense argument, as it suggests continued aggression after the immediate threat had passed.
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The injured man fled toward “The Strip” on Broad Street, an area densely packed with casual dining establishments and takeout restaurants. He then returned toward his truck near the end of South Beach Street, where bystanders provided assistance until emergency medical services arrived. Nantucket police Sergeant Travis Ray located and arrested Downer nearby on South Beach Street, where he was found sitting in a chair on the sidewalk.
Defendant released on bail with strict conditions
Following his Wednesday arraignment, Downer was released after posting $2,500 bail. The court imposed several conditions on his release pending trial. He must stay away from the alleged victim and have no contact with him whatsoever. Additionally, Downer is required to wear a GPS tracking device and maintain a distance of at least 25 yards from the victim’s residence at all times.
The defense attorney raised concerns about his client being held overnight before arraignment. Moriarty argued in court that Downer should have been arraigned Tuesday, suggesting that authorities could have expedited the process. The attorney made pointed criticism of local law enforcement’s handling of the case, stating that Nantucket police essentially decided they would not abide by constitutional requirements because they consider themselves above such standards, according to local news reports.
Violence rattles affluent island community during peak season
The daytime stabbing has unsettled Nantucket residents and business owners as the wealthy coastal enclave enters its busiest tourist season. The island’s year-round population swells dramatically during summer months with an influx of vacationers, day-trippers, seasonal workers, and affluent second-home owners. Violent incidents are relatively rare in the community, making the downtown stabbing particularly shocking for locals and visitors alike.
The case now moves forward through the Massachusetts court system, with the surveillance video footage expected to play a central role in determining whether Downer’s actions constituted lawful self-defense or excessive force. Both prosecution and defense will likely focus heavily on the sequence of events captured on camera and whether the use of a knife was proportionate to the threat Downer faced. The outcome could hinge on precise interpretations of when the initial assault ended and whether any subsequent actions by Downer exceeded what was necessary for self-protection.
