An early morning multi-alarm fire in Riverbank has caused extensive damage to a couple of businesses along the main corridor through town. Crews were on scene at the corner of Third and Atchison streets, with a report of the fire starting in the Vigil Wireless business and spreading next door to the Serv-All Liquor business. Along with crews from the Riverbank station, additional units have been called in from multiple locations, including Oakdale, Escalon and Modesto.