Alan P. Nadeau, who is accused of fatally stabbing a man last Sunday in Lebanon, was carrying a bloodied bayonet in a briefcase when he turned himself in to state police at the same time that first responders were arriving at the crime scene, according to a police report.

Nadeau, 31, who told police he suffers from mental illnesses and has not taken medication since last year, is accused of stabbing Christian E. Beloin, 37, of Coventry in the neck as Beloin slept on a couch at the Nadeau home at 67 Ledge Road on April 12.

According to the police report, Nadeau entered the lobby of the state police barracks in Colchester with the briefcase shortly after 4:38 a.m., when somebody called 911 from the Ledge Home Road to report that a man had been stabbed. Holding his head with his hand, he stated he had been abused as a child. 

Troopers seized the briefcase, which contained a computer and a bayonet with blood on both sides of its 8-inch blade. Nadeau told police he was sitting on the couch with Beloin, a friend of his father who visited the home often, when he started having flashbacks of being abused by his father and Beloin. He said he thought the only way to stop the abuse was to attack the victim and "get locked up," according to the report.

Family members of Nadeau and Beloin could not be reached for comment.

Charged with murder, Nadeau is being held at Radgowski Correctional Center and will make his first appearance in the New London Superior Court where major crimes are heard on May 4. He has not yet retained an attorney, and a prosecutor has not yet been assigned to the case.

At the crime scene, troopers found Beloin lying face down on the living room floor with blood pooling around his head and neck and smeared on the walls, according to the police report. A paramedic pronounced him dead at the scene. The state Office of the Chief Medical Examiner determined Beloin died of a stab wound to the neck and ruled the death a homicide.

At the barracks, Nadeau waived his rights and provided a statement, captured on video, according to the police report. He said he lives at the home with his father and the father's girlfriend and that he had been abused since he was a child. 

Nadeau said he suffers from Post Traumatic Stress Disorder and schizophrenia, and that he has been prescribed antidepressant and anti-psychotic medications in the past but had not taken them since last year.

He said he was seated on the living room couch with Beloin, who was asleep, when he had flashbacks to being abused. He said he went to the basement and retrieved the bayonet out of a toolbox, returned upstairs and stabbed the victim one time.

He said he ran to his room, grabbed his computer, placed it in a bag with the bayonet and drove to the barracks.

k.florin@theday.com

Twitter: @KFLORIN