The case of a man who was beaten more than three years ago but died in December has been ruled a homicide, according to D.C. police.

Demetrius Ormon Dempsey, 34, had been living in hospitals and nursing homes since he was beaten on June 30, 2007, in the 200 block of 54th Street NE, police said.

He died in December, and in January, the medical examiner ruled his death a homicide from complications of blunt force trauma.

On Wednesday, detectives from the cold case unit arrested Malik Shabazz, 44, of Northeast Washington, charging him with second-degree murder while armed.