and caused `` minimal visibility '' on a stretch of Interstate 10 there , said Bart Graves , a spokesman for the Arizona Department of Public Safety . Tucson : Two suffered critical injuries in chain - reaction incident 10 miles north of Tucson . One person died and two suffered life - threatening injuries in Pichacho Peak fire . The fire caused ` ` minimal visibility '' along Interstate 10 north of Tucson .
Tucson : Two suffered critical injuries in chain - reaction incident 10 miles north of Tucson . One person died and two suffered life - threatening injuries in Pichacho Peak fire . The fire caused ` ` minimal visibility '' along Interstate 10 north of Tucson .