The shooting unfolded at Mercy Hospital on the city's South Side, and officers were searching the facility.
According to ABC Chicago, one suspect has been shot.
That rampage followed the worst anti-Semitic attack in modern U.S. history, when a gunman opened fire on worshipers at a synagogue in the United States city of Pittsburgh on October 27. He said at least one "possible offender is shot" but no details were immediately released.
At least four people, including a police officer, were in critical condition after a shooting in the vicinity of Chicago's Mercy Hospital, police said. He said the shooter and the woman had been speaking before the shooting, but he didn't know if they knew each other. "It's like a movie scene", Gray said. I was in the hospital at mercy over the weekend and I was just about to go back an hour ago bc I still feel frightful but I told my mom and aunt I needed to take a nap first. She said she saw officers shooting back and forth. "I mean within seconds they were just surrounding the hospital, firefighters and ambulances, everything, they were just surrounding the hospital", she said.
'I am scared as hell.
'This was very close to me.
A source in the Chicago Fire Department told NBC 5 the hospital had been partially evacuated.