A 17-year-old student who allegedly started a rumor that someone was going to shoot up or bomb Jordan High School was arrested Thursday.

A rumor that five students were planning a shooting at the school circulated on social media — primarily through the messaging app Snapchat — on Jan 26., Canyons School District spokesman Jeff Haney said at the time.

Principal Wendy Dau sent an email to parents early that morning, saying police had investigated the threat and that officials believe it was “unfounded.”

Extra law enforcement officers were posted at the school and in surrounding neighborhoods as a precaution throughout the day, Haney said.

The false alarm “consumed an excessive amount of resources and caused fear among students and parents,” Sandy police Sgt. Jason Nielsen said in a news release.

“Irresponsibly posting false and baseless information on social media which causes alarm to the public and school officials is dangerous and may be in violation of the law,” Nielsen said.

The student was arrested on suspicion of making a false alarm, a class B misdemeanor.

Nielsen said anyone with concerns about school safety should report the information to parents, school administrators or law enforcement. Sandy police can be reached at 801-568-7200.