Washington, D.C. ? A former West Virginia federal prosecutor said Friday the White House fired him in 2005 in the middle of a corruption and vote-buying investigation but never told him why.

Karl K. “Kasey” Warner said he has “concerns” and sees parallels between himself and eight other ousted U.S. attorneys. Congress and an internal Justice Department agency are investigating whether those firings were politically motivated.

The Justice Department rejected any suggestion of politics in Warner’s dismissal.

Warner would not elaborate on what concerned him about his August 2005 firing but rejected the idea that he was fired for his performance.

Attorney General Alberto Gonzales has denied that politics influenced hiring and firing decisions. And though Gonzales has apologized for mishandling the controversy, he has rejected calls from lawmakers to step down.