The Justice Department is investigating possible issues with the mortgage fraud investigation into California Democratic Sen. Adam Schiff that is run by two Trump administration political appointees, Ed Martin and Bill Pulte.

One witness, a Republican from California named Christine Bish, spoke to a federal grand jury in Maryland on Thursday morning. Investigators had sought information about the possibility that there was a person who claimed to be working for Pulte or Martin, but was not properly deputized, according to two sources familiar with the developing situation.

Bish previously said publicly she believed she had information to share about Schiff related to his mortgages.

She said she’s never spoken to the two men outside of an occasional light message on social media, but that her independent probe into Schiff was submitted to Pulte’s office earlier this year and later referred to the Justice Department, where it was handed off to Martin.

“If they’re trying to tie me into some kind of clandestine conspiracy, it’s not there, and the best way to protect myself is to be open and honest and public,” she said, adding later: “Something’s not adding up. And I haven’t gotten to the bottom of it yet, but I will.”

Martin holds four titles at the Justice Department: US Pardon Attorney, Special Attorney for Mortgage Fraud, Associate Deputy Attorney General, and director of the Weaponization Working Group. Pulte is the director of the Federal Housing Finance Agency.

The inquiry, according to the additional sources, include the office of Deputy Attorney General Todd Blanche at Justice Department headquarters looking into the work of people who may have been dispatched or held themselves out to witnesses improperly around the mortgage fraud investigation.

It is not yet clear the subjects of the investigation, or what criminal theories may be looked at by investigators. It is against the law, generally, to impersonate a federal official.

The Justice Department declined to comment.

This story is developing and will be updated.

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