A 21-year-old man was shot and killed on the South Side last night, police said.

Jason Riley of the 6700 block of South Oakley Avenue  was wounded in the back around 9:20 p.m., said Officer Marcel Bright.

He then entered the King Kong Chinese Chop Suey restaurant, at 1544 W. 69th St., and died.

There are no suspects in custody and the investigation is still in its preliminary stages, Bright said.