CHICAGO (AP) - A gunman opened fire Monday at a Chicago hospital, wounding at least four people, including a police officer and a hospital employee, authorities said.
A police spokesman said the gunman was dead, but it was not immediately clear if he took his own life or was killed by police.
The shooting unfolded at Mercy Hospital on the city's South Side, and officers were searching the facility.
A witness named James Gray told Chicago television station ABC 7 that he saw multiple people shot: "It looked like he was turning and shooting people at random."
Four people were in critical condition, including an officer. At least one of the four was a hospital employee, police spokesman Anthony Guglielmi said.
Authorities asked people to avoid the area.
A message left for hospital officials was not immediately returned.
Television footage showed several people, including some wearing white coats, walking through a parking lot with their arms up.
Copyright 2018 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.