By: KDKA-TV News Staff

HARRISBURG (KDKA) – State police evacuated their headquarters in Harrisburg after a bomb threat Monday afternoon.

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State police closed down roads and asked people to avoid the area after their department headquarters received a threat.

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Police say explosives detection canine teams thoroughly searched the headquarters. No explosives or other dangerous devices were found, police say.

They returned to the building several hours later.

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Police say the investigation is ongoing, and there was no word on any possible charges.