Authorities say the tow truck operator was loading a vehicle on I-94 when he was struck by a blue minivan. The driver didn't stop after the collision.

The Waukesha Police Department said around 6:41 p.m., a tow truck operator was loading a disabled vehicle on the eastbound shoulder of I-94 east of Sawyer Road when they were hit by a blue minivan that left the scene.

Dozens of tow truck drivers gathered on Christmas at a park-and-ride off Interstate 94 to remember one of their own with a vigil. Hussain Farhat, 40, was killed on Christmas Eve when a blue minivan struck him while he was loading a disabled car on the freeway.

A collision between two semis on Christmas Eve morning in Kankakee County left a tow truck driver dead and his 15-year-old son with serious injuries, according to

TOW TRUCK DRIVERS STANDING TOGETHER FOR A FALLEN COLLEAGUE. A MEMORIAL IN DELAFIELD TONIGHT FOR THE DRIVER KILLED ON CHRISTMAS EVE. POLICE SAY HASSAN FAHAD WAS ASSISTING WITH A DISABLED VEHICLE WHEN ANOTHER DRIVER HIT HIM.