FALLBROOK, Calif.—A 23-year-old Marine corporal has been arrested on a murder warrant charging him with killing a man found dead in his car last month, authorities said.

Kevin Albert Richard Coset was taken into custody Friday night at Camp Pendleton, San Diego County Sheriff's Capt. Duncan Fraser said in a statement. Agents from the Naval Criminal Investigative Service assisted in the arrest.

On Jan. 3, the body of 24-year-old Alvin Bulaoro was discovered zipped into a sleeping bag inside his Toyota 4Runner at an Albertsons market in Fallbrook. He was last seen Dec. 21, when he went to visit friends. His family reported him missing Dec. 23.

Homicide detectives said the body had signs of trauma.

The warrant charging Coset with murder was issued Friday.

Fraser did not say what connected the two men, or what evidence led to Coset.

Bulaoro was a second lieutenant in the U.S. Army Reserve, and he worked as administrator of a home health care business, according to UT San Diego.