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.

The Waukesha County Sheriff’s Office continues to investigate a fatal hit-and-run crash Tuesday evening that left a tow truck operator dead. It happened around 6:40 p.m. in the eastbound lanes of Interstate 94 in the village of Summit just east of Sawyer Road.

Illinois State Police said a truck driver lost control of his rig on Illinois Route 17 near Bull Creek Road, and hit another semi head-on.

The tow truck driver who was hit by a minivan and later died on Dec. 24 in Waukesha County has now been identified, and a suspect is now in custody, according to the Waukesha County Sheriff's Office. The sheriff's office said the tow truck driver has been identified as Hussain Farhat, an employee of Yaffo Towing, which is out of Chicago, Illinois.