Police say a man was shot on a commuter train in Washington, D.C., and two teenagers have been arrested.

News media outlets report that a 24-year-old man was shot on a Green Line train Tuesday as it approached the Anacostia Metro station. Police say the victim was conscious and breathing when he was found on the platform about 12:45 p.m.

Metro Transit Police said on Twitter that the shooting was not an act of terrorism.

Metro spokesman Dan Stessel said there were other people on the train, but it wasn't packed at the time of the shooting. He said video surveillance helped police quickly apprehend two suspects, ages 15 and 19.

Metro reported delays in both directions Tuesday afternoon because of the shooting.