(GLENVIEW) An Illinois state trooper who was heading home for the night in his squad car but pulled over to help at an accident scene was struck and killed by a vehicle Saturday afternoon in the north suburbs, police said.

Trooper Christopher Lambert, 34, stopped to help at a three-car crash in the northbound lanes on I-294 near Willow Road in Glenview, Illinois State Police Director Leo P. Schmitz said at a news conference.

Lambert, a five-year veteran, positioned his car in the lefthand lanes to protect the people involved but he was struck by a passing vehicle at 4:43 p.m., Schmitz said.

Lambert was given CPR by an off-duty nurse at the scene and was taken to Glenbrook Hospital in Glenview where he died at 7:24 p.m., Schmitz said.

“He’s a hero,” Schmitz said, “and now I’m going to take care of him, his family and our troopers.”

The driver who hit Lambert stopped, Schmitz said. The crash appeared to be an accident but was still under investigation.

“All the people who worked with him, they said he was a go-getter, he was a hard worker, they loved him, he got things done — we’re going to miss him,” Schmitz said.

Lambert was married and had a 1-year-old daughter, Schmitz said.

State police were expected to lead a procession of Lambert’s body to the Cook County medical examiner’s office, Schmitz said.