No one was hurt after a fire broke out at the Co-op refinery in Regina.

Employees at the refinery were evacuated just after 8 p.m. Tuesday, after black smoke was seen billowing from a pumphouse.

The Regina Fire Department arrived on scene shortly after, and worked with the refinery's fire crews to contain the flames. It was business as usual Wednesday at the refinery.

The cause of the fire is under investigation.

Last October, a pipe leaking diesel fuel and hydrogen gas caught fire and sent an explosion tearing through part of the plant, injuring several workers.