Authorities respond to a shooting in Harford County, Md., on Thursday, Sept. 20, 2018. Authorities say multiple people have been shot in northeast Maryland in what the FBI is describing as an "active shooter situation." (Jerry Jackson /The Baltimore Sun via AP)

Authorities respond to a shooting in Harford County, Md., on Thursday, Sept. 20, 2018. Authorities say multiple people have been shot in northeast Maryland in what the FBI is describing as an "active shooter situation." (Jerry Jackson /The Baltimore Sun via AP)

ABERDEEN, Md. (AP) — The Latest on the shooting in Maryland (all times local):

12:05 p.m.

Law enforcement officials say the lone suspect in a shooting at a Rite Aid distribution center in northeast Maryland is in custody in critical condition.

Harford County Sheriff Jeffrey R. Gahler says there is no longer any threat at the site of the Thursday morning shooting. He says there are multiple injuries and multiple fatalities. He didn’t go into further details about the casualties at a Thursday afternoon news conference. He says authorities are taking care in the preliminary investigation to avoid giving incorrect information.

A law enforcement official told The Associated Press that three people were killed in the shooting. The law enforcement official has knowledge of the shooting but wasn’t authorized to discuss details by name and spoke on condition of anonymity to The Associated Press. The official stressed that the number is based on preliminary information.

Gahler says the call about shots fired came in from the Rite Aid distribution center at 9:06 a.m., and deputies and other officers were on the scene in just over five minutes.

—Eric Tucker contributed from Washington.

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11:35 a.m.

A spokeswoman for Rite Aid says a shooting has taken place on the campus of a company distribution center in Aberdeen, Maryland.

Spokeswoman Susan Henderson told The Associated Press on Thursday morning that the shooting happened at a support facility adjacent to a larger building.

A law enforcement official told The Associated Press that three people have been killed in the shooting. The law enforcement official has knowledge of the shooting but wasn’t authorized to discuss details by name and spoke on condition of anonymity to The Associated Press. The official stressed that the number is based on preliminary information.

Henderson says authorities are at the scene and the company is cooperating with the investigation.

She says the company has no further information to share.

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11:25 a.m.

An official says three people have been killed in a shooting in Harford County, Maryland, that authorities describe as an “active shooter” situation.

The law enforcement official has knowledge of the shooting but wasn’t authorized to discuss details by name and spoke on condition of anonymity to The Associated Press. The official stressed that the number is based on preliminary information.

The Harford County Sheriff’s Office tweeted that there was a shooting Thursday morning in the Perryman area that involves “multiple victims.” They warn that the situation is still fluid and asked people to avoid the area.

The FBI’s Baltimore field office tweets that it’s responding and assisting the sheriff’s office with an active shooter situation. The Baltimore field division of the federal Bureau of Alcohol, Tobacco, Firearms and Explosives tweets that its special agents are responding too.

—Erick Tucker, The Associated Press

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11:10 a.m.

An official says multiple people have been killed in a shooting in Harford County, Maryland.

The law enforcement official has knowledge of the shooting but wasn’t authorized to discuss details by name and spoke on condition of anonymity to The Associated Press.

The Harford County Sheriff’s Office tweeted that there was a shooting Thursday morning in the Perryman area that involves “multiple victims.” They warn that the situation is still fluid and asked people to avoid the area.

The FBI’s Baltimore field office tweets that it’s responding and assisting the sheriff’s office with an active shooter situation. The Baltimore field division of the federal Bureau of Alcohol, Tobacco, Firearms and Explosives tweets that its special agents are responding too.

—Eric Tucker, The Associated Press

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10:35 a.m.

Authorities say multiple people have been shot in northeast Maryland in what the FBI is describing as an “active shooter situation.”

The Harford County Sheriff’s Office tweeted that there was a shooting Thursday morning in the Perryman area that involves “multiple victims.” They warn that the situation is still fluid and ask people to avoid the area.

The FBI’s Baltimore field office tweets that it is responding and assisting the sheriff’s office with an active shooter situation. The Baltimore field division of the federal Bureau of Alcohol, Tobacco, Firearms and Explosives tweets that its special agents are responding too.

Maryland Gov. Larry Hogan says his office is monitoring the situation in Aberdeen and that the state stands ready to offer any support.