The Brief

A Columbia County, Oregon, juvenile was arrested for allegedly plotting a mass shooting and bombing at the Three Rivers Mall in Kelso, Washington.

Authorities said the detailed plan included using a chlorine bomb and shooting mall patrons before taking his own life.

The FBI and local law enforcement collaborated to swiftly identify and arrest the suspect on May 22, 2025.

A juvenile from Columbia County, Oregon , was arrested last month in connection with a conspiracy to conduct an improvised explosive device attack and mass shooting at the Three Rivers Mall in Kelso, Washington .

The FBI held a press conference after thwarting a planned mall shooting in Kelso, Washington. (FBI Portland)

What we know:

The teen, whose name has not been released because they are a mino

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