Police have identified the body pulled from a 20-foot well in Fort Washington Saturday afternoon.
Prince George's County police said the victim was Lenwood "Lenny" Harris, 53, of Alexandria.
An autopsy determined Harris had been shot, and police are investigating the death as a homicide.
The extraction came more than 48 hours after police received an anonymous tip that the body was located in the well behind an abandoned home in the 11900 block of Old Fort Road.
Alexandria Mayor Bill Euille told News4's Darcy Spencer he sends his sympathies to Lenny Harris's family and said it's not the outcome the community was hoping and praying for.
Harris disappeared in September. His phone was found on the Wilson Bridge, not far from the well.
His car was found abandoned in October in Prince George’s County.
Surveillance cameras show someone using his credit card since his disappearance.
Harris was known as an advocate for the underprivileged. He was a regular at recreation centers where he would help find tutors for children.