Via ABC (which I saw first on Twitter):
Authorities say an explosive team is on the way to the airport, and that while the presence of explosives has not yet been confirmed, they believe it was an attempted “shoe bomb.”
The suspect was identified by authorities as a diplomat in the Qatar embassy in Washington, Mohammed al Modadi. The FBI said the man had full diplomat immunity as the 3rd secretary and vice-consul.
Really early, rough reports though.
UPDATE: Fox and others reporting it’s likely a “misunderstanding.”