Officials are continuing to investigate a fire that destroyed a small travel trailer Wednesday afternoon but they do not believe it is related to a string of arson fires here during the past few months.“Right now we are listing the cause as undetermined,” Lamesa Fire Chief Larry Duyck said Friday morning.“We don’t have any reason to believe it was intentional. It’s still under investigation, but we have identified the occupants and believe it was accidental.”Duyck said the trailer was getting electricity through extension cords from a nearby location, but he did not know if that contributed to the fire.Both the ...