Authorities say the man who killed himself in a Casper College classroom Friday morning after killing two other people was the son of his second victim.

Casper Police Chief Chris Walsh says 25-year-old Christopher Krumm, of Vernon, Conn., first stabbed 42-year-old Heidi Arnold about two miles southwest of Casper College, then went to the college and killed his father, 56-year-old computer science instructor James Krumm.

Chief  Walsh says the younger Krumm smuggled a bow-and-arrow into his father’s classroom, then shot his father in the head with it in front of a group of students before stabbing himself with a large knife.

On Saturday, police searched the Connecticut home of Christopher Krumm. Vernon, Conn, Police Sgt. Timothy O’Connor says whatever was recovered in the search of the younger Krumm’s home was turned over to Wyoming investigators.