State attorney general said that John Madore, 33, killed security officer Bradley Haas in the entrance to the psychiatric hospital

Authorities say the gunman who was killed after shooting to death a security guard at a New Hampshire psychiatric hospital has been identified.

New Hampshire’s attorney general, John Formella, said on Saturday that 33-year-old John Madore entered the New Hampshire hospital on Friday afternoon and killed Bradley Haas, a state department of safety security officer who was working at the front lobby entrance of the facility.

Shooter killed security guard, who has been identified, and was shot dead by a state police officer on security duty

An armed individual walked into the lobby of a state psychiatric hospital in New Hampshire on Friday and shot dead a former police chief working as a security guard before a state police officer on duty at the facility shot and killed the suspect, officials said.

New Hampshire state police initially had reported “multiple victims” from the shooting, but no one else, including the trooper who confronted the suspect, was injured in the gun violence, which erupted at about 3.30pm ET at the New Hampshire state hospital in Concord, the state capital, according to Mark Hall, the state police colonel.