LONDONDERRY, N.H. (CBS) — A fuel delivery employee shot and killed Tuesday night after arriving at a Londonderry home on a work assignment has been identified.

City Fuel technician Daniel Rabideau, 59, of Manchester was identified by his wife Wednesday. The New Hampshire Attorney General’s office said Rabideau came to the house on Currier Drive for a routine service call, during which the homeowner, Richard Verville, 71, shot him in the head.

READ MORE: 'It's A Tough Year': Santa's Helper In Norwood Overwhelmed By Demand

On Wednesday afternoon, the AG’s office says Verville has died in a Massachusetts hospital from injuries he suffered after attempting to kill himself. A medical examiner will be conducting an autopsy to determine the cause and manner of death.

Rabideau’s wife, Carole, came to the scene, saying she just had to see it for herself–she didn’t believe it was real.

“I can’t make the connection,” she said. “I needed to make it real for myself.

“He was my best friend. He loved with all of his heart, he would help anybody that he could.”

She said they were due to celebrate their 25-year wedding anniversary this October, and that their family included five children and eleven grandchildren. She said Daniel’s death added to his family’s grief, as his brother lost his battle with lung cancer only two weeks ago.

Carole said Daniel called her just minutes before he arrived at the home. She said there was no connection between Verville and her husband, who had worked for City Fuel for three years.

READ MORE: First Snow Of Season A Hopeful Sign For Businesses That Rely On Winter Weather

“Now he doesn’t get to come home,” Carole said.

Local police and SWAT team members, as well as the Mass. State Police explosives division, responded to the home Tuesday night after a call for a welfare check. Neighbors told police a fuel van pulled up to the home and they heard gunfire a short time later.

Neighbors in Londonderry reported gunfire after a fuel fan pulled into a home. (WBZ-TV)

Neighbors in Londonderry reported gunfire after a fuel fan pulled into a home. (WBZ-TV)

The New Hampshire Attorney General’s office identified Verville Wednesday afternoon. They said in a statement that Verville “was apparently suffering from significant mental health issues at the time of the incident.”

Neighbors described Verville as a paranoid man in his 70s who believed he was on a terror watch list.

They said he was known to start altercations with others and had several surveillance cameras on his home. Kurt Kiley, a neighbor who lives directly across the street from the home, said he was “not surprised” to see police action at the home, and that he has a no-trespass order against Verville.

“People up here knew that this guy had some issues,” said Kim Mattucci, Daniel Rabideau’s stepdaughter, through tears. “But nothing was done, and then you have someone like that with guns.”

MORE NEWS: Doctors: Plenty Of Time To Get COVID Booster Shot Before Holidays

WBZ-TV’s Chantee Lans contributed to this report.