The Gloucester County Prosecutor's Office says police found 42-year-old Mark Holloway in an abandoned trailer in Monroe Township Friday morning.
Investigators believe Holloway stabbed 42-year-old Kim Barnum multiple times in her Washington Township apartment Thursday before getting into a car driven by his mother.
Authorities say his mother intended to take him to police, but he jumped out of the vehicle.
An autopsy showed Barnum sustained significant knife wounds to a lung and the aorta.
Authorities say Holloway and Barnum had a history of domestic violence.