WHEELING, W.Va. (AP) — The U.S. Marshals Service says a man with an assault-type rifle fired 15 to 20 shots at the federal courthouse in Wheeling. W.Va., before security officers returned fire, critically injuring the man.

Chief deputy Mike Claxton of the Marshals Service in northern West Virginia says one officer was hurt by shattered glass inside the courthouse during Wednesday's shooting but no other injuries were reported.

Claxton says the gunman was in a parking lot across from the courthouse downtown. He says officials are attempting to determine a motive.

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