Hollis Teen Charged with Assault in Nashua Attack

Connor Cook accused of unprovoked punch that left victim unconscious

Published on Feb. 24, 2026

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A 19-year-old Hollis resident, Connor Cook, has been arrested and charged with assault for an incident in late November in downtown Nashua, New Hampshire. According to police, Cook allegedly punched another teenager in the head, causing the victim to fall unconscious to the ground with serious injuries.

Why it matters

Violent assaults in public spaces raise concerns about public safety, especially when the alleged perpetrator is a teenager. This case highlights the need for community dialogue around youth violence prevention and the role of law enforcement in responding to such incidents.

The details

On November 27, officers responded to a report of an unconscious man on Main Street in Nashua. The victim, also a teenager, was taken to the hospital with serious injuries. A witness told police that the suspect, Connor Cook, had attacked the victim unprovoked by punching him in the head, causing him to fall to the ground unconscious. Detectives identified Cook as the suspect and he was arrested on December 23, 2025 on a warrant and held on preventive detention.

  • On November 27, officers responded to the incident on Main Street.
  • On December 23, 2025, Connor Cook was arrested on a warrant.
  • On December 24, 2025, Cook was arraigned in Nashua District Court.

The players

Connor Cook

A 19-year-old resident of Hollis, New Hampshire who was arrested and charged with assault for an alleged unprovoked attack on another teenager in downtown Nashua.

Nashua Police Department

The law enforcement agency that responded to the incident, identified the suspect, and made the arrest.

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What they’re saying

“Officers spoke with a witness, who remained on scene and said a male, unprovoked, attacked the victim by punching him in the head and knocking him to the ground, before fleeing the area.”

— Sgt. John Cinelli, Public Information Officer and Communications Division Supervisor, Nashua Police Department (Patch.com)

What’s next

The judge in the case will decide on Tuesday whether or not to allow Connor Cook to be released on bail.

The takeaway

This case highlights the need for greater community dialogue and youth violence prevention efforts to address incidents of unprovoked public assaults, which can have serious consequences for both victims and perpetrators.