Many of the injured suffered burns in fires caused by collisions , police says . Between 30 and 40 vehicles were involved in the Interstate 10 accidents , which also seriously injured five people , Officer Robert Bailey told CNN 's sister network HLN . One killed ; 14 other were hurt , five seriously . Dust storm caused at least two wrecks on I-10 south of Phoenix , authorities say . Police ask motorists to avoid stretch of road .
Many of the injured suffered burns in fires caused by collisions , police says . One killed ; 14 other were hurt , five seriously . Dust storm caused at least two wrecks on I-10 south of Phoenix , authorities say . Police ask motorists to avoid stretch of road .