2 dead, including gunman; officer among those shot at a Chicago hospital

CHICAGO -- Four people were shot and two are dead, including the gunman, after a shooting at Mercy Hospital on the city's South Side, Chicago police said. A Chicago police officer is among the injured.

WATCH LIVE: ABC7 Special Report on Mercy Hospital Shooting

Police said shots were fired both inside and outside the hospital between 3 p.m. and 3:30 p.m. Mercy is located in Bronzeville near the intersection of 25th and Michigan Avenue.

Chicago fire officials said two women were shot; one was taken to Northwestern Memorial Hospital in extremely critical condition, the other was taken to University of Chicago Hospital in extremely critical condition.

Sources told the ABC7 I-Team the first victim was an ER doctor who was reporting to her afternoon shift at the hospital. The sources said she encountered her former fiance in the parking lot, where he shot her before entering the hospital and continuing to shoot.

Chicago police said an officer was shot and also taken to University of Chicago Hospital for treatment.

The hospital was partially evacuated, and employees and patients were taken to warming buses. They are waiting for police to give them the all clear to return.

Mercy Hospital said in a tweet that the incident is over.

Witnesses described a chaotic scene.

"It was chaos, mass chaos," said James Gray, witness.

WATCH: Witness James Gray describes the shooting at Mercy Hospital
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A man who witnessed the Mercy Hospital shooting said a man shot a woman three times in the chest outside an entrance. After she fell to the ground, he said the man stood over her and shot her three more times.

Gray said he saw a man and a woman who looked like they were walking towards the parking lot.

"The gentleman turned around and shot three times in the chest," Gray said. "Once she fell to the ground, he turned around and shot her three more times."

Gray described the shooting as surreal, "like a movie scene." He said the shooter and the woman had been speaking before the shooting, but he didn't know if they knew each other.

"They were walking and talking and he just turned around and started shooting. It wasn't a heated exchange. It was just like we're talking now," he said.

WATCH: Nigary Thompson describes shooting at Mercy Hospital
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A woman who was working inside Mercy Hospital Monday afternoon said she was less than 20 feet from the scene when the shots rang out.

Nigary Thomspon, who works at the hospital's family clinic, said she heard eight or nine shots. The clinic's employees and patients locked the doors and hid in the back of the clinic.

"I am scared as hell. I have never been so scared, I hear of shootings going on every day at people's workplaces, but not where I work at. This was very too close to me. That could have been us back there and if any bullets had pierced the wall we all would have been hurt," Thompson said.

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Mercy Hospital Shooting (1 of 14)

Chicago police officer Samuel Jimenez had only been a full-fledged officer for a few months when he responded to the call for help at Mercy Hospital.

ATF Chicago said on Twitter they also responded to the hospital to assist in the investigation.

A witness who was across the street at the time of the shooting said he heard six or seven gunshots that he initially thought were sounds from nearby construction. He said he saw a large police presence arrive at the hospital shortly after, and people running out of the hospital.

National Teachers Academy was placed on hard lockdown at 3:55 p.m. as a precaution due to the shooting. The elementary school is a few blocks away from the hospital. The lockdown was lifted shortly after 5 p.m.

This is a breaking news story. Check back with abc7chicago.com for updates.
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