Blowing dust on Interstate 10, near Interstate 8 in Pinal County caused a three vehicle crash Tuesday night.
Bart Graves, an Arizona Department of Public Safety spokesman, said a preliminary investigation shows that two semi-trucks and a pickup truck were involved in the crash.
The crash was blocking I-8 westbound, near Murphy-Russell Road, said Graves shortly after 7 p.m.
Injuries were not known.
No further information was immediately available.
