A series of threatening notes found at multiple Flagstaff schools is being investigated by police.
The latest note was found by a custodian in the girl's restroom at Flagstaff High School on Thursday, police said. Police and investigators are in the process of interviewing students and staff to find the person responsible for the notes.
Additionally, a threatening statement was found written on the wall of a stall in the girl's restroom at Thomas Elementary School on Thursday. The note referenced a possible school shooting, but does not appear to be linked to the note found at the high school. The incident is also under investigation.
Earlier this month a student found a note at Flagstaff High School in the boy's restroom. The note threatened a possible shooting and a day later a second note was found in the girl's bathroom of the same school. However, the note found in the girl's restroom mentioned a "Columbine" type incident to occur sometime this month.
On March 20 a third note was found in the girl's bathroom at the high school. This note alluded to April 20, which is the anniversary of the Columbine High School massacre in which two teens went on a shooting spree at a Colorado high school. During the incident, 13 people were killed and dozens of others were injured.
These threats are being investigated as a felony crime, police said.
Over the next several weeks Flagstaff police will be patrolling near campus. They've also assigned a full-time school resource officer to work during school hours.
Police are offering a $2,000 reward to anyone with information leading to an arrest.