St. Matthew School in Regina was under heightened security Thursday after the school received what police said was a threatening letter.
Several police officers were at the school at 4710 Castle Rd. in the afternoon after the school board called police.
Police said they are investigating a possible threat after an anonymous letter was received at the elementary school that raised concerns.
"An envelope was found outside the school," Brian Lach, a spokesman for the Catholic school board, said. "When it was taken inside and opened, it was found to have a threatening message on it."
The school, which has between 200 and 300 students, was not under a lockdown and parents were able to pick up their children.
The school suspended extra-curricular activities, but classes continued.
Later on Thursday police told CBC News that there was no imminent risk and classes would resume as usual on Friday
However, the investigation into the letter and its message was ongoing.
It's the second day in a row police have been dealing with a threat at a Regina school.
On Wednesday, an 18-year-old Thom Collegiate student was charged with uttering threats after he allegedly used threatening language at the school and on Facebook.