Spokane Valley fire said three mobile homes on East Sprague caught fire around 6:30 p.m. Monday. Fire crews said all three homes were destroyed. Investigators are calling the fire suspicious. The mobile homes are located behind the Zips on East Sprague near Sullivan. Smoke could be seen from a mile away. Witnesses said they could hear propane tanks popping. Neighbors said the lot was empty until a month ago. It has been used to store manufactured homes. Firefighters are using nearby parking lots for their trucks so there are minimal traffic disruptions.