The New Jersey Attorney General says 29-year-old Kyle Foggy died from his injuries after being shot in the presence of state troopers and U.S. Marshals.
The shooting happened Tuesday night at the Clara Barton Service area in Oldmans Township, Salem County.
Authorities haven't said if Foggy was shot by police or if his gunshot wound was self-inflicted.
Foggy had been charged in Camden County with shooting and killing 28-year-old Michelle Cruz in Lawnside, New Jersey on Feb. 25.