A section of SAIT Polytechnic was closed for about two hours Wednesday evening after police got a call from an employee about several loud bangs that sounded like gunshots.
Officers cleared students from the area, but found no trace of a gunman or shell casings.
The play is being staged at the nearby Southern Alberta Jubilee Auditorium, where a theatre group has permission to use blanks in the performance.
Police say misinformation about the call that spread rapidly on social media did not help their investigation.
Sgt. Cory Ma, a police spokesman, says it led to a sort of telephone game. (CHQR)
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