ALIQUIPPA, Pa. —

A shooting by a federal agent is under investigation in Aliquippa, Beaver County, the city's mayor said Thursday night.

Mayor Dwan Walker confirmed that the person who was shot is a student at Aliquippa High School. Advertisement

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A statement from Pennsylvania State Police, who are investigating, said that "ATF and FBI agents working in a joint investigation were involved in a shooting incident."

"We don't know the whole situation and what caused this or what happened. It wasn't an officer of Aliquippa-involved shooting. It was an ATF-involved shooting. An agent from ATF was involved in this, but it wasn't local," Walker said.

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Emergency dispatchers said the shooting happened shortly after 6:2

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