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SACRAMENTO-

A supposed shooting threat written in graffiti at Rio Americano High School is being investigated by the Sacramento County Sheriff’s Department and the FBI.

The note was found Friday and indicated that the shooting would happen Wednesday, Oct. 22, according to investigators. A second note below it said the shooting would happen a day earlier.

According to Rio Americano Principal Brian Ginter, officers would be stationed at the school Tuesday and Wednesday.

Read notes from Principal Ginter here.