A multi-vehicle crash at I-10 westbound, east of the mini-stack, sent four people to the hospital Wednesday night.
The 4-vehicle crash occurred at 6:40 p.m. The collision left 3 lanes, including the HOV lane, blocked.
According to Phoenix Fire, three people suffered critical injuries and one victim suffered serious injuries. There was one victim in each of the vehicles.
One of those victims had to be extricated from a vehicle that rolled over.
DPS is investigating how the collision occurred.