File Photo (Lake Zurich Police Department) | Photo: Woo-Sung Shim / Lake and McHenry County Scanner

Police say the driver of a van was seriously injured after he drove into the opposite lanes of Route 12 in Lake Zurich and crashed into three vehicles, injuring three others.

The Lake Zurich Fire Rescue Department and Lake Zurich Police Department responded around 10:45 p.m. Monday to Route 12 and Miller Road for a multiple-vehicle crash with injuries.

Lake Zurich Deputy Police Chief Bob Johnson told Lake and McHenry County Scanner that officers arrived to find four vehicles involved.

A preliminary investigation showed a cargo van was traveling southbound on Route 12 from Miller Road.

The van crossed the median into oncoming traffic and crashed into three vehicles, which were traveling northbound on Route 12, Johnson said.

It is unknown what caused the driver of the van to cross over into oncoming traffic.

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The driver of the cargo van was reportedly unresponsive when officers arrived, according to fire department radio traffic. Four ambulances were dispatched to the scene.

Johnson said the driver of the van, an adult male, suffered serious but non-life-threatening injuries. He suffered the most severe injuries of those involved.

He was transported by paramedics to an area hospital.

Three others, including two adults and a child, were transported to area hospitals with minor injuries.

Police shut down the northbound lanes of Route 12 from North Old Rand Road to Miller Road, Johnson said.

Officers reopened the roadway following approximately three hours of crash investigation.

The incident remains under investigation by the Lake Zurich Police Department Traffic Safety Division.