CHICAGO (AP) — A police officer died and another was critically injured after a man in police custody and receiving treatment at a Chicago hospital opened fire on them Saturday, according to officials.

"Officers transported an individual over to the Swedish hospital for an observation, at which time two of our officers were shot," Chicago police Superintendent Larry Snelling said at a news conference in the afternoon. "One was shot critically. It (the death) was pronounced. The second officer right now is fighting for his life in the hospital behind us.â€

The Associated Press