A law enforcement official who had been briefed on the incident provided the casualty toll for CNN. Another source close to the investigation said the woman was a disgruntled employee. She shot herself in the head in an apparent suicide attempt, but was unsuccessful so she shot herself again, the source said.
The shooting occurred at a Rite Aid support facility about 30 miles northeast of Baltimore. It was not clear if the woman worked for Rite Aid or for another company in the area.
The suspect used a single handgun, Sheriff Jeffrey Gahler said at a news conference. The gunwoman is in custody and in critical condition at a local hospital.
No law enforcement officers fired shots during their response, he said.
Rite Aid spokeswoman Susan Henderson said roughly 1,000 employees work at the distribution center, where products are received and processed for delivery.
“The shooting happened adjacent to the primary building,” she said. “What I understand is the location is secure.”
‘It’s right on the doorstep’
Colleen Hendrickson, who lives and works in the area, said she was waiting on the bus when someone told her there had been a shooting nearby.
“I, of course, thought it was far off or, that’s like down the road or something, right?” she told CNN affiliate WJZ. “No, it’s right outside. It’s right on the doorstep.”
She saw emergency vehicles, including ambulances, and helicopters, which were out of place for the “sleepy” part of the county, she said. The area is home to many warehouses and plants, some belonging to major brands, including makeup and bleach companies.
“It’s really just usually very calm, and this is the most chaotic I’ve ever seen it,” she told the station. “It’s very scary when it’s just right there on your doorstep because you can see a billion news reports about shooters, about emergency instances, and it still doesn’t make it real to you.”
People were being asked to avoid the area just outside the city of Perryman. Homes, churches and a cemetery are in the vicinity. Railroad tracks run alongside a business park.
Third mass shooting in a day’s time
Deputies were dispatched at 9:09 a.m. ET, the sheriff’s office tweeted. They were on the scene in five minutes, Gahler said.
The Bureau of Alcohol, Tobacco, Firearms and Explosives sent agents from Baltimore. The FBI’s Baltimore office is also assisting.
“We are closely monitoring the horrific shooting,” Gov. Larry Hogan tweeted. “Our prayers are with all those impacted, including our first responders. The state stands ready to offer any support.”
Police killed the shooters in both Wednesday incidents.
CNN’s Carma Hassan, Dakin Andone, Evan Perez and David Shortell contributed to this report.
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