UPDATE: The Winnebago County Coroner has identified the person who was killed in the Monday morning crash.
The coroner said 34-year-old Lisa Barton, of LaSalle, IL, died after the car she was a passenger in collided with a pickup truck.
Coroner Bill Hintz said the driver of Barton's car was turning left onto U.S. 20 from S. Alpine Road when they collided with a pickup truck.
Which driver was at fault is still under investigation by the Rockford Police Department.
Rockford Police say someone has died after a two-car crash on South Alpine Road at Bypass 20.
An identity and other injuries are not known at this time. We will continue to update this story.
Rockford Police are asking drivers to avoid the area of South Alpine Road at Bypass 20 due to a serious injury accident.
Police say South Alpine is closed between Linden Road and the westbound on ramp to Route 20.
A serious injury accident occurred Monday morning to cause the closures.
South Alpine between Linden Road and the southbound to westbound Bypass 20 exit are closed, as is the eastbound Bypass 20 exit to South Alpine Road.
Drivers are being asked to use alternate routes Monday morning as this area will be closed to traffic for several hours.