WICHITA, Kan. (AP) — A federal judge has rejected claims by a former Kansas City, Kan., police detective that he was punished for refusing to conceal a motorist’s beating by federal agents.

U.S. District Judge J. Thomas Marten issued a summary judgment Wednesday for the Unified Government of Wyandotte County, the sheriff and an undersheriff in the 2011 lawsuit brought by Max Seifert.

 

Seifert alleged he suffered retaliation for investigating Drug Enforcement Administration agents involved in a 2003 road-rage incident that left a man with permanent brain damage.

Marten ruled Seifert failed to prove that his testimony in that case led to the suspension of his duties as an investigator and the termination of his reserve commission.

The judge said the defendants presented “credible evidence” they were motivated by concerns from prosecutors about Seifert’s credibility.