ONALASKA, Wis. (WKBT) -

A medical issue likely caused a driver to crash into a traffic signal on Highway 16 and 157 Friday morning, according to Onalaska police.

Police said at about 9:45 a.m., Xao Xiong, of La Crosse, was going westbound on Highway 16 from the area of Theater Road when his car crossed into on-coming traffic before hitting a traffic signal at the intersection of Highway 16 and Braund Street.

A witness reported seeing the driver slumped over the wheel continuing to travel westbound Highway 16. The car once again went into on-coming traffic and came to rest on a snowbank in front of BMO Harris.

Investigators said Xiong likely suffered a medical complication prior to the crash.

If you witnessed this incident and can provide further information, contact Onalaska police (608) 781-9550) and ask to speak with Investigator Chad Marcon.

The La Crosse Fire Department, La Crosse County Sheriff’s Department, Onalaska Police Department and Tri-State Ambulance assisted with this incident.