Updated at 11 p.m. with the victim's identity.
ST. LOUIS COUNTY — An Illinois woman died in a multi-vehicle crash Friday morning on Interstate 70 in St. Louis County.
Laurie A. Whipple, 50, from Breese, was driving westbound just before 7 a.m. near Hanley Road when a big rig changed lanes, hitting Whipple's car.
Whipple was taken to SSM Health DePaul Hospital, where she was pronounced dead.
The Highway Patrol said one of the motorists had suffered a heart attack. Investigators were trying to determine whether the heart attack occurred before or after the collision.
Neither Berkeley police nor a Missouri Highway Patrol spokesman were available for comment.
The Missouri Department of Transportation said the westbound lanes of I-70 were closed for the police investigation.