A male student at George Washington University was attacked early Friday morning off campus.
He was approached by a man in the area of Sixth Street and Constitution Avenue in Northwest as he walked home from a bar in the 1200 block of 18th Street about 3 a.m.
The student told police the man threatened him with a knife. He said he was robbed then sexually assaulted.
No arrests have been made.
The attackeris described as a skinny black man in his 20s, standing about 5-foot-8. He had a soft voice, wore his hair in dreadlocks and was wearing red shorts.
Police have notified students and staff at the George Washington University of the attack.