A gunman has reportedly opened fire at the campus of Mercy Hospital in Chicago, CBS Chicago reports.

“According to dispatch reports, a woman has been shot,” the station noted. “There are also reports an officer who has been shot.”

The Chicago Tribune says there are “reports of multiple victims” according to police spokesman Anthony Guglielmi.

“Fewer than six people were believed shot, according to an official,” the Tribune.

The Chicago Fire Department called an emergency medical services Plan II and sent at least 10 ambulances to the scene.

Officers are doing a methodical search of Mercy hospital. At least one possible offender is shot. Please avoid the area of 26th and Michigan

— Anthony Guglielmi (@AJGuglielmi) November 19, 2018

A #ChicagoPolice officer has been shot in the active shooter incident at Mercy Hospital. He is in critical condition but receiving excellent care. Please send your prayers. pic.twitter.com/kFfMY1ZmF7

— Anthony Guglielmi (@AJGuglielmi) November 19, 2018

NBC News reports the officer is in critical condition.

Mayor Rahm Emanuel is at the Public Safety HQ, monitoring develpments with Chicago Police Superintendent Eddie Johnson.

The suspected gunman at Mercy Hospital is dead, according to Chicago Police.

— Leslie Moreno (@lesliemorenotv) November 19, 2018

BREAKING: Ambulance believed to be carrying injured Chicago police officer arrives at University of Chicago trauma center after a shooting at Mercy Hospital. @WGNNews pic.twitter.com/FSl1IXbDTX

— Ben Bradley (@BenBradleyTV) November 19, 2018

https://twitter.com/_NailahW/status/1064640552421998592

Woman who heard the Chicago hospital shooting: "You can't go to the hospital, you can't go to school, you can't go to church, you can't go to the grocery store. You cannot go anywhere…You just never know when you walk into a place if you're going to come out alive" pic.twitter.com/CJyL0H7cti

— CBS News (@CBSNews) November 19, 2018

my coworkers can be in this active shooting at mercy hospital rn and I'm losing it it's never safe anymore

— Sara (@kangaroo62_) November 19, 2018

I’m losing my fucking mind because my cousin Cassandra recently has a stroke and is at mercy and no one is answering their phones what the fuck is the point of having the fucking cell phones if no one is going to answer when I fucking CALL

— Roberta Songthrush (@ariellecollette) November 19, 2018

https://twitter.com/DLeilaniG/status/1064633506800779272?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1064633506800779272&ref_url=https%3A%2F%2Fwww.nbcchicago.com%2Fnews%2Flocal%2FShots-Fired-Near-Mercy-Hospital-500861111.html

Police have not yet identified the weapon used in the shooting, but people were already assuming it was an assault rifle and lashing out at the National Rifle Association.

I just got my first I’m safe text from my mom who works at Mercy hospital. This better be my last @NRA please tell me how this man got his hands on an assault rifle? https://t.co/H4lz9o13Mc

— Dana Schnoebs (@danaschnoebs) November 19, 2018

Watch live footage on the ground below:

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