The flurry of activity comes as a special grand jury is set to begin its work of investigating the former President and his allies on June 1. A person familiar with the investigation said secretary of state officials are not alone in receiving subpoenas in recent weeks, as the Fulton County district attorney’s office has ramped up its investigative activity.

The subpoenas call for the witnesses to testify on dates from early to mid-June. Raffensperger, who has previously said he would comply with a subpoena, appears slated to be one of the first witnesses to testify on June 2. His call with Trump — in which the former President pressured Raffensperger to “find” the votes needed for Trump to win Georgia — lies at the heart of the Georgia probe.

Sterling, Raffensperger’s deputy, also has said he would comply with his subpoena. Several staffers in the office have already had voluntary conversations with Fulton County investigators and handed over relevant documents and recordings.

Willis, meantime, has said she’s not limiting her investigation to Trump’s infamous call with Raffensperger. She has cast a wide net — looking at Georgia’s fake electors, former Trump lawyer Rudy Giuliani’s conspiracy-ridden presentation to state lawmakers and other issues — as she tries to determine whether Trump and his allies engaged in a broad criminal conspiracy to try to swing the Peach State to Trump’s column.

Fulton County investigators traveled to Washington, DC, earlier this month to meet with staffers for the House select committee investigating the January 6, 2021, insurrection to go over information that may be relevant to the Georgia probe, according to the person familiar with the investigation. A spokesperson for the committee declined to comment.

The newspaper’s managing editor, Shawn McIntosh, has said they would try to have any subpoena for Bluestein dismissed. She did not immediately respond to CNN’s request for comment.