A man who was found fatally stabbed inside a rowhouse Sunday afternoon near Stanton Park on Capitol Hill has been identified, and a 21-year-old man has been arrested in connection with the slaying, D.C. police said.

David Norwood, 79, of Northeast Washington was pronounced dead at the scene in the 600 block of C Street NE. His body was discovered about 1:40 p.m. The house is between Massachusetts and Maryland avenues.

Police said Monday that Norwood suffered multiple stab wounds. A police lieutenant, commenting on an Internet community bulletin board, told residents that the attacker was “possibly known to the victim.”

Malcolm Amir, 21, of Northeast Washington was arrested and charged with second-degree murder while armed.

This comes as the District has had more than 30 homicides so far this year, according to a tracking by The Washington Post.