A man found dead outside his Greenwood apartment Thursday morning by his mother may have died of a drug overdose. According to police, 24-year-old Cory Allen had recently been paroled from prison. Police say he had met with his parole officer Wednesday. Later that night, he was spotted out with friends. He was found against the side of a building at the Park Madison Apartments near Fry Road. Investigators said six people checked on him between 11 p.m. and 2 a.m., but assumed he was just asleep. An autopsy is scheduled for Friday.