A sworn affidavit from a former prosecutor who worked for McLennan County District Attorney Abel Reyna in the DA's Office claims Reyna made sure DWI cases involving friends and campaign supporters never went to trial.

Gregory S. Davis worked for the McLennan County District Attorney's Office from Feb. 2011 to August 2014.

"During my employment in the McLennan County District Attorney's Office I became aware of several cases in which the elected District Attorney, Abel Reyna, arranged for his campaign supporters, persons associated with campaign supporters, and friends to receive preferential treatment," Davis said in the sworn affidavit. "I believe that he did so for political and/or personal gain."

He pointed to three examples of cases in which he said he believed Reyna dismissed valid criminal cases for his friends and campaign supporters by instructing subordinates not to prosecute.

"This is a perfect example of 'fake news' from my former political opponent and a disgruntled former employee," Reyna said in a statement. "They are trying to undermine the success and important work of this office, and I won't dignify such ridiculous and untruthful allegations from 2014 with any further response."

In the affidavit, Davis claimed Reyna swept a DWI arrest involving a reelection campaign contributor under the rug, even though Davis said there was blood evidence to suggest the person's blood alcohol content was twice the legal limit.

Reyna's office also declined to prosecute a friend of Reyna's wife who was arrested for DWI and whose household had contributed to Reyna's reelection campaign after prosecutors refused to try her DWI case, according to Davis' claims in the affidavit.

When Davis said he and fellow prosecutor Michael Jarrett confronted their boss, Reyna, about the alleged conflicts of interest, Reyna grew angry, according to the sworn affidavit.

"Reyna said words to the effect of 'Never get in my f---ing' business again," Davis said in the sworn affidavit.

Davis said and he and Jarrett reported their concerns to the Texas Rangers, according to the affidavit. Davis also claimed he, Jarrett, and others have also spoken to the FBI, as part of what he described as a public corruption investigation of Reyna. And, he said Jarrett had bought a second cell phone to allow him to communicate with the FBI without Reyna's knowledge, the affidavit stated.

As previously reported, Davis -- through an attorney -- has also previously claimed he could testify to conversations with the McLennan County District Attorney's Office that suggested it was Reyna's decision to arrest 177 motorcyclists at Twin Peaks, despite what he said were the wishes of police.

There is a hearing to discuss the accusations on Nov. 20, but Davis will be out of the country then.