But there is little public indication of an active federal probe, and three sources told CNN that the pro-Trump electors who are cooperating with the state inquiry in Georgia haven’t yet been contacted by anyone at the FBI, Justice Department or relevant US attorneys offices.

That, however, does not preclude the possibility federal investigators are also looking into the circumstances around alternate slates of electors being put forward in Georgia, the sources acknowledged.

“We’re going to look at anything connected with interference with the 2020 election,” Willis said in an interview last week with CNN’s Anderson Cooper. “I’ve allowed that to be a broad scope, not just the (former) President’s phone call that you played there but other things that indicate that there may have been interference with that election, to include fake electorates.”

Willis added: “That is of interest to my office.”

In that same CNN interview, Willis said she didn’t have concrete plans to coordinate her investigation with any potential inquiries from the Department of Justice.

“What their investigation would be is obviously election fraud that may have occurred anyplace in this great country,” Willis said. “Mine is much smaller — a big investigation, but much smaller. I am only looking into election interference in the state of Georgia and, more specifically, things that they asked for around that call that occurred in my county, Fulton County.”

During interviews with Willis’ team, witnesses in Georgia have been forthcoming and provided significant factual information about what happened on December 14, 2020, when pro-Trump electors met and voted on alternate slates, according to one source familiar with the meetings.

Giuliani and his allies coordinated the nuts-and-bolts of the process on a state-by-state level, three sources previously told CNN. One source said there were multiple planning calls between Trump campaign officials and GOP state operatives, and that Giuliani participated in at least one call.

The source also said the Trump campaign lined up supporters to fill elector slots, secured meeting rooms in statehouses for the fake electors to meet on December 14, and circulated drafts of fake certificates that were ultimately sent to the National Archives.