One of the detectives killed in an ambush Wednesday in York County while searching for a suspect in a domestic violence case had been shot at in the line of duty before.

Another detective fatally shot Wednesday was a leading expert in the field of computer and cellphone forensics.

The third detective slain had rescued a mother and her three children from a burning building.

The three detectives — Isaiah Emenheiser, Mark Baker and Cody Becker— were shot and killed by 24-year-old Matthew Ruth around 2 p.m. on the 1800 block of Haar Road, according to the district attorney.

York County District Attorney Tim Barker on Thursday released the names of the Northern York County Regional Police detectives who were fatally shot in an ambush attack Wednesday afternoon . 33

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