DEKALB COUNTY, Mo. — Missouri State Highway Patrol is releasing more information on the fatal crash that killed the DeKalb County Sheriff Andy Clark Wednesday morning.

Troop H says Clark, 43, was southbound on Highway 33 just before 11:30 a.m. when a car driven by Robert Carpenter, 71, struck Clark’s passenger side at the intersection of Highways 33 and 36.

Both cars went off the south side of Highway 36. Clark was pronounced dead at Mosaic Hospital in St. Joseph. He was not wearing a seat belt, according to the report. Officials say the emergency lights were on at the time of the crash. Clark was responding to assist deputies.

Carpenter was moderately injured while 3 of his passengers received minor injuries. They were all taken to Cameron Regional Medical Center for treatment.

Multiple law enforcement agencies are mourning the death of one of their colleagues.

“The men and women of the Chillicothe Police Department want to extend our heartfelt condolences to Sheriff Andy Clark’s family, and the brave men and women of the DeKalb County Sheriff’s Office,” the department wrote on Facebook. “Please keep Sheriff Clark’s family and the DeKalb County Sheriff’s Office in your thoughts and prayers.”

Clark is the first sheriff to die in the line of duty since 1994 when Maries County Sheriff Roy Bassett was shot and killed investigating a minor traffic accident.

Clark was on his way to assist a deputy trying to catch a man accused of fleeing after allegedly stealing beer.

The crash in under investigation and KMZU will update this story when more information is released.