There was a brief evacuation of St. Thomas Aquinas High School this afternoon.
OPP say it was because of a suspicious package found around 1 p.m.
Staff and students were moved to nearby staging areas as a precaution while police, Kenora Fire and Rescue Service and an Explosive Disposal Unit were called to investigate.
Everyone returned to class after police determined there was no imminent danger.
Police are now soliciting the public's help.
Anyone with information can contact the OPP at 1-888-310-1122 or anonymously by calling Crime Stoppers at 1-800-222-8477 (TIPS).