Phoenix, AZ : Seven people injured after 6-vehicle crash on State Route 51 at Union Hills on Wednesday, Nov 11, 2015

Phoenix Fire Department officials say seven people have been injured in a six-car accident on a north Phoenix freeway.

They say the accident occurred around 4:30 p.m. Wednesday on State Route 51 at Union Hills.

Authorities say seven people were transported to hospitals with three in serious but stable condition.

The other four were transported in stable condition with minor injuries.

Fire officials say two people had to be extricated from their vehicles.

It wasn't immediately clear how the crash occurred.

Source :

Phoenix Fire Dept.: 7 people injured, 3 seriously, after 6-vehicle crash on Phoenix freeway