D.C. police on Thursday arrested a 36-year-old suspect in the stabbing death of a man who was found Saturday lying behind a strip of rowhouses on Georgia Avenue in Northwest Washington.

Officer Araz Alali, a department spokesman, said Marvin Moore of Northwest Washington was charged with second-degree murder while armed. He has not been arraigned.

Police said a patrol officer found the victim, Timothy Benjamin, 58, lying on his back about 12:40 a.m. The victim was pronounced dead at an area hospital. Police said he had been stabbed several times.

Authorities did not comment on a possible motive.