A bomb threat on Sunday briefly forced a closure at the Ronald Reagan National Airport near Washington DC. But authorities later said nothing was found.
The airport was briefly shut down for up to 20 minutes while US Airways flight 2596 from Dayton, Ohio, landed and was diverted to an isolated area, Courtney Mickalonis, spokeswoman for the Metropolitan Washington Airports Authority was quoted as saying by Xinhua.
Investigators interviewed the 44 passengers on board, and bomb experts checked the plane, but nothing was found.
A person who had made a bomb threat involving the plane at the ticket counter in Dayton, while the plane was in the air near Washington, was taken into custody, FBI officials said.