Because of the extensive damage done, the cause of a mobile home fire on the 1500 block of Rayner Avenue in Sutherland remains undetermined. Damage is pegged at $75 thousand. The Saskatoon Fire Department received a 911 call just before six Sunday evening about flames coming from a mobile home. Fire crews found the home fully involved in fire and reports from firefighters indicated that the floor had burned through. There was no one home at the time. Some fire crews fought that blaze while others were protecting adjacent buildings. There were no injuries.