The Yorkton Fire Department suspects arson in an apartment fire that caused widespread evacuations yesterday.

The department responded to two fires at the same building and reported that the first, which occurred late Monday Night, didn't appear suspicious, but the second, which was found in a different area early Tuesday morning, appeared to be set by hand. There was also an explosion that caused minor injuries to two firefighters.

Fire Cheif Trevor Morrissey says one of the walls coming down ruptured a natural gas line, which caused the evacuations in the area, but residents have since been able to return home. The building where the fires occurred, however, is a complete loss.

In the most recent update, Morrissey says crews are still working to secure the site, and investigators should be able to access it within the next day or two.