Missing DC Girl Relisha Rudd UPDATE: Police Ask for Public's Help in Identifying Man Caught on Video, Officers Think Citizen Might Have Information on Case (WATCH)

D.C. police announced this week that they have ended their search of a Washington park where they believed 8-year-old Relisha Rudd could be found.

Investigators are now asking the public to help identify a man they think might know something about Relisha's case. They said they only want to talk to him, according to the Associated Press.

Metropolitan police said a man seen on video stepping off of an escalator at what appears to be a Metro station could be familiar with Relisha, and have information on her whereabouts.

Law enforcement officials have been combing through Kenilworth Aquatic Gardens for almost two weeks in search of the missing girl, who was with Kahlil Tatum, the janitor who worked at D.C. Shelter for Families where Relisha lived with her mother Shamika Young for the past year.

Police found the body of 51-year-old Tatum on Monday with an apparent gunshot wound, snarling the investigation even further, the Associated Press reported.

"This discovery was a shock for us," Washington Police Chief Cathy Lanier said at the time. "We were very focused on finding Relisha and that's what we came here for...We're not finished. That search is continuing."

Hundreds of volunteers, including FBI agents and police officers, searched for Relisha in the 700-acre garden the week before.

Relisha's mother said that she'd previously put Relisha in Kahlil Tatum's care while they lived at the D.C. shelter.

Police determined on March 2 that Tatum purchased black 42-gallon trash bags, a shovel and some lye - a chemical often used for burying reminds - in D.C. He was then seen at Kenilworth Park a couple days later.

Relisha was last seen on March 1.

"This trash bag thing really has me scared now," Relisha's stepmother Belinda Wheeler told USA Today. "To me, that sounds like she's dead. I don't want to think this, I want her brought back home, but once again, once you're under pressure, you're liable to do anything."