There won’t be any official confirmation of exactly what happened until later today, but authorities are saying someone tossed a Molotov cocktail-like device into the food court at Ballston Mall today shortly after noon. They said it did not explode and one was hurt.

Washingtonian reporter Travis Andrews, who was on the scene in Ballston, reports that the device was thrown over a railing from an upper floor at the mall, according to authorities. The suspect reportedly fled into Metro, but it’s unclear whether he’s on a train that has been stopped or if he is cornered in the Courthouse Metro station. Andrews says FBI, ATF, and Arlington police are investigating at the Metro stop and at Ballston Mall. He said many people are crowded around the locations and that parts of Wilson Boulevard have been shut down. The mall was evacuated, closed, and sealed off. There were reports of a possible three other devices, but authorities will not confirm, according to Andrews.