>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 suspect, whose identity has not been disclosed due to his age, allegedly planned to detonate a chlorine bomb to create chaos and panic before shooting fleeing patrons exiting a movie theater, the FBI Portland Field Office said in a statement on Thursday. The Columbia County, Oregon, Sheriff’s Office arrested the suspect on May 22, the FBI said. >Kelso is approximately 50 miles north of Portland, Oregon. >The suspect currently faces charges of attempted murder in the second degree, attempted assault in the first degree, two counts of unlawful use of a weapon, tampering with physical evidence, disorderly conduct and two counts of unlawful possession of firearms, according to the Columbia County district attorney and the charging document. >“This plot was as serious as it gets,” FBI Portland Special Agent in Charge Doug Olson said in the statement. . . [Archive](https://archive.today/6k37p)