The Lehigh County Coroner’s office said a fire chief and assistant fire chief in Fleetwood, Berks County, were killed in the line of duty Saturday during a missing person search.

Chief Jeffory L. Buck, of Fleetwood, was pronounced dead on Saturday, at 8:07 p.m. in the Emergency Department at Lehigh Valley Hospital — Cedar Crest.

Buck and Assistant Fire Chief Robert Shick Jr., both members of the Walnuttown Fire Company, were struck at 5:57 p.m. Saturday when the department UTV they were operating was struck by a motor vehicle during a missing person search.

Shick was transported to Reading Hospital, where he also died from his injuries.

The two were heading north when they were struck by a sedan heading south on Route 222, according to the Berks County Coroner.

NBC Philadelphia reported that the utility vehicle was riding on the shoulder of Route 222 when the Camry swerved off the road. Police told the station that a male and a female who were in the Camry when it crashed fled and were later arrested.

According to news reports, driving under the influence charges are pending against the driver. District Attorney John Adams said 26-year-old Alexander Sepulveda-Rivera from the Bronx was driving the swerving car, which allegedly went off the road and hit the UTV.

Autopsies will be completed Monday at the Lehigh County Coroner’s Office and Forensic Center.

“On behalf of myself and the entire Lehigh County Coroner’s Office and Forensic Center, we extend our deepest and most heartfelt condolences to the families of Chief Jeff Buck and Assistant Chief Robert Shick, as well as to the members of the Walnuttown Fire Company and the entire firefighting community, said Coroner Daniel A. Buglio.

“We mourn alongside them during this profound loss and honor the dedication, courage, and selfless service these two fallen heroes gave in the line of duty. Their commitment to protecting and serving others will never be forgotten, and their sacrifice will be forever remembered.”

The Associated Press contributed to this report.