PHOENIX (AP) - Arizona authorities have arrested a teenager after a threatening message to schools was posted online.
Local news stations report that the Tempe Police Department arrested a 14-year-old Friday believed to be responsible for sending the messages Thursday.
Authorities say an investigation into the threats began after the messages of a school shooting were being shared with students at Mountain Pointe High School.
School officials say the messages did not mention the high school, but parents were alerted.
Tempe police say school remains operational and they will provide additional officers around the campuses "out of an abundance of caution."
Authorities say the teen is facing several charges.
Authorities say students and parents should alert police immediately of threatening messages instead of reposting and sharing them.