Three people injured in a two-car crash Tuesday morning south of Mascoutah were hospitalized in critical condition, according to the Illinois State Police.
Illinois 4 was closed near its intersection with Jefferson Road in the aftermath of the crash, which happened at 9:30 a.m.
An accident-reconstruction team blocked traffic while it investigated the crash, according to State Police spokesman Calvin Dye. The road was re-opened Tuesday afternoon.
Dye said police believe the southbound vehicle veered off the side of the road onto the grassy shoulder and then its driver over-corrected sending it across the centerline and into the path of the northbound vehicle. The vehicles crashed nearly head-on and came to a rest in the ditch on the east side of the road.
"We don't know at this point why the at-fault driver lost control of their vehicle," Dye said.
None of the crash victims' identities were released by police as of Tuesday afternoon. Police described the victims' injuries as life-threatening.
Rob Stookey, assistant fire chief in Mascoutah, said two of the victims were taken to a St. Louis hospital by helicopter. The other was taken by ambulance to St. Elizabeth's in Belleville and was later transported to a St. Louis hospital.
The driver of one of the vehicles had to be extricated and the other person in that car was ejected.
Contact reporter Scott Wuerz at firstname.lastname@example.org or call 239-2626.