ARLINGTON, Va. (WDCW) — A bomb threat prompted planes at Ronald Reagan National Airport just outside of Washington, D.C., to be grounded on Tuesday. Video shows passengers of one plane were even forced to deboard on the tarmac.

The FBI confirmed that the airport, one of the nation's busiest, grounded planes after reports of a bomb threat around 11:20 a.m. ET on Tuesday.

In an update roughly an hour later, the airport posted on X that all flights were being held while passengers on United Airlines flight 512 were offloaded and bussed to the terminal.

The threat was directed towards a United Airlines flight........

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