HARTFORD — The death of a Massachusetts man in January at a Quechee home that police investigated for possible foul play has been ruled a suicide.

New Hampshire’s chief medical examiner determined that 22-year-old Jonathan Carpenter, of Amherst, Mass., died as the result of a self-inflicted gunshot wound to the head, Hartford police announced this week.

On the afternoon of Sunday, Jan. 19, Hartford police and emergency crews responded to 235 Fairbanks Turn in Quechee for a report of a man who had been shot in the head. The man, later identified as Carpenter, was transported to Dartmouth Hitchcock Medical Center, where he died from his injuries.

His mother, Lacy Carpenter, said in an interview with the Valley News this week that her son had been shuttling between Connecticut and Vermont.

He was “up there selling drugs,” she said.

Her son had been staying at another house in Hartford but had gotten “kicked out” a couple days prior to his death, Lacy Carpenter said. She said she does not know how he came to be at the house on Fairbanks Turn.

Police have released little information about what occurred at the residence, other than saying that “all parties involved were known to one another” and that incident was “isolated.”

The house at 235 Fairbanks Loop is set down a driveway off a loop where nearly all the homes in the area are part of the Quechee Lakes Homeowners Association. Neighbors interviewed after the shooting told the Valley News that the home in question is not a member of QLHA.

On Wednesday, Eric Clifford, special investigator with Hartford police, said that in the wake of the shooting, police viewed “hours and hours” of security camera video footage, obtained warrants to search the property and social media accounts of the people at the scene.

Police interviewed “three or four” people at the scene who were all members of the same family in addition to a “possible suspect,” Clifford said.

The family members were “outside” the house at the time of the shooting and did not witness it, he said.

Clifford declined to provide further detail about the investigation. Following the medical examiner’s conclusion, the case is now closed.

“If we believed it was a homicide we would be actively investigating it as a homicide,” he said on Wednesday.

For her part, Carpenter said she is skeptical that her son took his own life. “He was not suicidal,” she said.

Though she acknowledged that she was not aware of any physical evidence at the scene that showed someone other than her son fired the gun.

The only fingerprints found on the gun were those of her son, Lacy Carpenter said.

Her son, who had been struggling with substance use for years, had made attempts to turn his life around.

“He was really smart. He just got caught up in the wrong lifestyle,” she said.

Recently her son had been “making plans to open a smoke shop. He wanted to start his own business,” she added. “People who want to die don’t make plans for the future.”

Those experiencing a mental health crisis can call or text 24/7 either the New Hampshire Rapid Response Access Point at 833-710-6477 or NH988.com or Pathways Vermont at 833-888-2557. People can also call or text the National Suicide & Crisis Lifeline at 988.

Contact John Lippman at jlippman@vnews.com.