Register to win $600 gift card

UPDATE: Police investigate potential bomb threat at Dulles airport

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

UPDATE: At 11:08 p.m., the MWAA tweeted that the Dulles Daily Garages have re-opened, following a police investigation with negative results. 

WASHINGTON—Officials say that police are currently investigating a bomb threat at the Washington Dulles Airport.

An airport spokeswoman told WTOP that police are checking the two large daily parking garages at Dulles for the bomb threat.

Around 8:30 p.m. passengers began tweeting that their planes were stalled on the Tarmac. Flights were delayed in and out of the airport, but all terminals and runways are now open, said the the Metropolitan Washington Airports Authority (MWAA).

By 9:50 the MWAA said that several garages remain closed as police investigate the threat. The hourly and economy lots are open.