Man critically injured in Loop stabbing

A 23-year-old man was critically injured in a stabbing Friday night in the Loop. About 9:10 p.m., officers found him wounded in the 300 block of South Dearborn Street, Chicago police said.The man told officers he was in a large crowd when someone stabbed him in the left arm with a knife. He was taken to Northwestern Memorial Hospital in critical condition. A knife was recovered near the scene, police said. No one was in custody.