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PITTSBURGH (KDKA) — Custodians were ordered to evacuate Pittsburgh King PreK-8 school on Thursday night over a threat that officials say turned out to be a hoax.

It all started just after 9:20 p.m. at the North Side school building.

Police and bomb-sniffing dogs were called to the scene after police say someone called in an alleged bomb threat to 911.

Emergency officials ordered the custodians out while they conducted a search.

Officials said they found nothing.

Stay with KDKA for the latest on this developing story.

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