An Oregon teen has been arrested in connection with an alleged mass shooting plot targeting the Three Rivers Mall in Kelso, in southwestern Washington, officials said.

The FBI thwarted a potential mass shooting by a teenager who planned to set off an explosive at a shopping mall in Washington state and shoot people as they fled the movie theater there, law enforcement leaders said Thursday.

The FBI derailed a plot by a teenager who had planned to detonate a bomb at a Washington state shopping mall and shoot people as they fled a movie theater in the building, law enforcement authorities announced Thursday.