Investigators are continuing to pursue leads after the latest in a series of arson fires here destroyed two houses and damaged another early Wednesday morning.One of those structures was the home of a woman and her two grandchildren.Police and other emergency responders helped evacuate them from the home.Fire Chief Larry Duyck said the family received Red Cross assistance after the fire. They also reportedly were being aided by family members in Lamesa.Although it began in a vacant house like the other arson fires over the past four months, Wednesday’s blaze was the first time an occupied residence has been destroyed ...