Former Georgia Democratic state Sen. Jen Jordan received subpoenas to testify before a Fulton County grand jury later this month, she told CNN.

The subpoenas to Jordan and independent journalist George Chidi are the strongest indication yet that Fulton County District Attorney Fani Willis intends to seek indictments in her criminal probe into efforts by Donald Trump and his allies to overturn the 2020 presidential election in Georgia.

Two grand juries with the power to issue indictments meet regularly in Fulton County, and Willis is expected to go before one of them this month to present her case. The presentment will likely take two days, according to people familiar with the matter.

The witnesses are expected to shed light on different aspects of Willis' case. While Chidi can share information about the fake GOP electors that convened in Georgia, Jordan witnessed the election presentation Rudy Giuliani and other Trump allies made before Georgia state lawmakers in 2020.

On December 3, 2020, Jordan was at the Georgia Senate Judiciary subcommittee hearing about election integrity during which Giuliani, then a Trump lawyer, and other supporters of the former president spread conspiracy theories about widespread irregularities and fraud in the state.

At the hearing, Trump's team presented a video of what they claimed was evidence of fraud from election night ballot tabulating in Fulton County, allegations that were investigated by the FBI, Department of Justice and state election officials -- and proven to be erroneous.

The subpoenas for grand jury testimony call on the witnesses to appear before the grand jury during the month of August and state that witnesses will get 48 hours notice when they are required to appear.

Both Jordan and Chidi previously testified before the special grand jury Willis used last year to gather evidence in her investigation.

A spokesperson for the Fulton County district attorney's office declined to comment.