A Vermont State Police detective is investigating the death of an man at Northwest State Correctional in St. Albans Town.

Jeffrey Nichols, 35, of Sheldon, Vermont. He was arrested by the Vermont State Police late Friday night in on a charge of second-degree aggravated domestic assault committed in the presence of a child.

Nichols was found unresponsive in the prison’s booking area just after 6:30 a.m. Sunday. Police say corrections staff gave him first aid and called for help, but the man died at the prison about 15 minutes later.

Authorities don’t believe his death was suspicious. The Vermont Office of the Chief Medical Examiner will perform an autopsy Monday to determine how he died. Toxicology tests will also be conducted.