Aberdeen, Maryland shooting: Three dead after woman opens fire at Rite Aid facility

At least three people were killed after a woman opened fire at a Rite Aid distribution center in Maryland on Thursday morning, law enforcement officials said.

The incident in Aberdeen, about 30 miles from Baltimore, appears to be over, multiple law enforcement officials said.

The unidentified suspect was detained and is in critical condition at a local hospital, Harford County Sheriff Jeffrey R. Gahler said at a news conference.

Several shot, female suspect down in Aberdeen, Maryland

Sep.20.201802:07

No shots were fired by officers at the scene, Gahler said, suggesting that the suspect might have shot herself. The suspect used a handgun in the incident, he said.

Sheriff's deputies were dispatched to the scene at 9:09 a.m. ET, the sheriff's office tweeted, adding that there were "multiple victims." In a separate tweet, the sheriff's office advised people to "avoid the area."

The shooting occurred at a Rite Aid facility where products are received from manufacturers and sent to store, according to Susan Henderson, a spokeswoman for the drugstore chain.

The FBI office in Baltimore and special agents from the Bureau of Alcohol, Tobacco and Firearms were also assisting with the investigation.

Gov. Larry Hogan tweeted that he was "closely monitoring" the situation, adding: "Our prayers are with all those impacted, including our first responders. The State stands ready to offer any support."

The incident comes one day after a heavily armed employee opened fire in the offices of a software company in Middleton, Wisconsin, injuring four people.

This is a developing news story. Refresh for updates.