Arizona drivers warned about dust storms

The state Department of Public Safety began warning travelers Saturday morning to avoid Interstate 10 near Casa Grande until the dust settled. The wind slowed down by the afternoon, but Public Safety spokesman Harold Sanders said visibility along the interstate from mile post 190 to 216 remained poor.

Sanders says officers are investigating five separate collisions in the area that resulted from Saturday's dust storms, including the one involving the two fatalities. He did not have details on the other collisions.

Authorities were urging motorists to be cautious while traveling through the area, to slow down and to maintain a large distance between vehicles.