The FBI is probing past legal work done by Texas gubernatorial candidate Wendy Davis, according to a report her Republican opponent’s campaign calls a “bombshell.”

The Dallas Morning News reported Friday that documents “related to Sen. Wendy Davis’ work as a lawyer for the North Texas Tollway Authority are part of an FBI inquiry of the agency.”

The news outlet said it’s unclear how much this investigation revolves around Davis, the Democratic nominee for governor.

“It’s not clear whether Davis’ work for the tollway authority is a focus of the FBI or only part of the material collected in connection with its look into tollway agency operations,” the paper wrote.

“We are not aware that Wendy Davis is the subject or target of any investigation,” her campaign told the outlet.

But the campaign for her Republican opponent, Greg Abbott, is raising questions in the wake of the revelation.

“This revelation — the latest in a series of bombshells regarding Sen. Davis’ ethical conduct — is both shocking and unsurprising at the same time,” Abbott communications director Matt Hirsch said.

“Sen. Davis must fully disclose the facts about any wrongdoing and the extent of her involvement in that wrongdoing,” Hirsch said. “Texans deserve to know the truth about Sen. Davis’ involvement in a matter the FBI is investigating. This is a serious ethics issue that may violate federal law and cannot be swept under the rug, as Sen. Davis has tried to do when confronted with questions about her ethics thus far.”

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