D.C. detectives questioned residents of a Petworth home Monday after police discovered items in their backyard belonging to the community-conscious couple who were brutally slain this weekend.

The items were found behind a residence in the 600 block of Ingraham Street NW, just yards from where Michael and Virginia Spevak’s burned-out car was found early Sunday, said Inspector Rodney Parks. Police believe the killers stole the couple’s Toyota Scion and drove it into the alley, torched the vehicle and tossed the items away.