Gunman, 3 others dead after shooting at Chicago hospital

CHICAGO — Police said an officer and three others, including the gunman, are dead after a shooting at Chicago's Mercy Hospital. Chicago Mayor Rahm Emanuel said a doctor and a pharmaceutical assistant were the other victims. 

Anthony Guglielmi, a Chicago police spokesman, identified the slain officer as Officer Samuel Jimenez.

Guglielmi said the gunman was killed, but it's unclear if he took his own life or was killed by police.

A massive law enforcement presence was seen on the campus and medical staff were seen being evacuated after the first reports of the shooting. Guglielmi had urged citizens to avoid the area. The hospital tweeted the shooting is over and said Chicago Police Department has secured the facility and the patients are safe.

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