According to the Arizona Department of Public Safety, the crash happened just before 9:45 a.m. when a westbound semi-truck lost control, hitting the center barrier wall.
The cab of the semi truck went over the wall into eastbound lanes. The trailer remained in westbound lanes and the vehicle caught fire.
Witnesses say they had to jump a fence along I-10 to get to victims in semi crash - people were using fire extinguishers to try and put it out. Witnesses describing a trail of fire as the semi slammed on its brakes, then into the wall. pic.twitter.com/j3LcXYfbzb