The body of a man who was reported missing last week was found in Montgomery County on Monday in the trunk of his car, and Maryland State Police said he had apparently been slain.

State police said John P. Ryan, 37, of Frederick was found after police discovered his car in a parking lot in the 15000 block of Somerville Drive in the Derwood area. He apparently had suffered an injury, state police said, and an autopsy was to be conducted.

According to the state police, Ryan’s car was found about 2:30 p.m. by an investigator from the Department of Homeland Security. The agent had been assigned to the Frederick County narcotics task force, police said.

Police said Ryan’s wife reported him missing last Thursday to the Frederick police department.

Investigators searched for his car, which was described as a black 2007 Lexus, police said. After it was spotted, the car was brought under police escort to the state police office in Rockville.