Mercy Hospital shooting: Four dead; Officer escapes injury when bullet strikes his holstered gun

First, the bad news: a Chicago police officer was killed after being shot at Mercy Hospital Monday afternoon. The suspect, a 32-year-old male who had opened fire near the hospital, was shot and killed.

Three other people who were previously listed in critical condition have passed away as well:

The good news: another police officer escaped injury when the shooter’s bullet was stopped by the gun in his holster.

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Update:

And here’s the apparent motive: