03/07/2016 05:55 EST | Updated 03/07/2016 05:59 EST

Medicine Hat Schools Locked Down After Anonymous Threat

"We take these threats seriously." via Getty Images

MEDICINE HAT, Alta. — Police in southern Alberta say a high school has closed and several others are locked down after some students received an anonymous text threat.

Medicine Hat police say there's a chance the threat is a hoax because it is nearly identical to one sent in the United States three years ago

Staff Sgt. Brian Christmann says five students received text messages on Sunday night that threatened to shoot them and anyone with them.

A news release says officials with Monsignor McCoy High School voluntarily chose to close the school for the day and students were sent home as a safety precaution.

All schools in the city's public and Catholic districts are in partial lockdown and students are not allowed outside.

Extra officers have been posted at all city high schools.

"We take these threats seriously although ... the one from the U.S. was considered a prank at the time,'' Christmann said Monday. "We're investigating it.''

Redcliff RCMP say they are also investigating because one student at Eagle Butte School in nearby Dunmore was named in the threat.

Also on HuffPost:

Photo gallery La Loche Mass Shooting See Gallery