The Alexandria Police department is investigating a bomb threat made Sunday night at an office building in the 600 block of Prince Street.

Police said people evacuated the building and there were no injuries. According to officials, the Arlington County bomb squad is on the scene.

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There was police activity in that area.

Around 10:30 p.m., Police gave an "all clear" on the bomb threat. Roads were reopened.

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There is no further information at this time.