A 17-YEAR-OLD ARCADIA VALLEY HIGH SCHOOL STUDENT HAS BEEN ARRESTED FOR MAKING A THREAT. The anonymous threat sent to several students at that high school September 9thsaid … school shooting on Monday. Don’t be late. After some detective work by local authorities, as well as the FBI, the Iron County Sheriff’s Office arrested 17 year old Justin Buffington last Friday. September 12th was the day referred to in the threat, which was sent thru a smartphone app. In response, there was a strong law enforcement presence on the high school campus and more than half of the students stayed home. No incident occurred and Buffington was tracked down and arrested 4 days later. He was put in the Iron CountyJail on 25,000 dollars bond.