At least one person was severely burned in a fire that started Monday afternoon at mobile homes in Manteca and prompted evacuations, authorities say. Multiple homes caught fire at the Islander Mobile Home Park. Embers from that fire then sparked a vegetation fire close to the mobile home neighborhood, fire officials said. As of around 3 p.m. the vegetation fire had burned about 10 acres. The person who was injured was hospitalized with third-degree burns. It is not yet known how the fire started.