CHICAGO (CBS)– Three people were killed in a crash in Lake County, Indiana, on Friday morning, after fleeing a traffic stop and crashing into a semi.

Lake County Sheriff’s Police said officers conducted a traffic stop near Ridge Road and Grant Street early Friday. As officers were talking to the three males in the car, the driver sped off.

Police said officers tried to follow the car, but lost sight of the vehicle at the I-80/94 overpass. A short time later, they saw the car had hit a semi-tractor trailer at the overpass.

Two males in the car were pronounced dead at the scene. A third died later at Methodist Northlake Hospital.

The truck driver was not hurt.

The westbound Grant Street exit ramp from I-80/94 was blocked for several hours due to the accident.

The Lake County Sheriff’s office was investigating the accident.