`` What we see here is some farmland here that is very dry and was recently cultivated , and that may have contributed to this , '' he said . Many of the injured suffered burns in fires caused by collisions , officer says . five killed ; Three other people hurt , 14 seriously . Dust storm caused Three wrecks on I-10 south of Arizona , authorities say . Officials ask motorists to avoid stretch of highway .
Many of the injured suffered burns in fires caused by collisions , officer says . five killed ; Three other people hurt , 14 seriously . Dust storm caused Three wrecks on I-10 south of Arizona , authorities say . Officials ask motorists to avoid stretch of highway .