Federal prosecutors have examined more than 100,000 documents seized from the email accounts of three lawyers associated with former President Donald Trump in a continuing investigation into the roles they played in a wide-ranging scheme to help Trump overturn the results of the 2020 election, according to court papers released Friday.

The material came from email accounts belonging to John Eastman, who helped devise and promote a plan to create fake slates of pro-Trump electors in states that were actually won by Joe Biden, and two former Justice Department lawyers, Jeffrey Clark and Ken Klukowski, who have faced scrutiny for their own roles in the fake electors scheme, the papers say.

As part of their inquiry, federal investigators in Washington obtained a search warrant for the three men’s email accounts in May and the following month seized their cellphones and other electronic devices.

The court papers, unsealed by Beryl Howell, the chief judge in U.S. District Court in Washington, revealed for the first time the extent of the emails that investigators had obtained.

The court papers, which emerged from a behind-the-scenes review of the material for any that might be protected by attorney-client privilege, said little about the contents of the emails.

But they noted that each of the men was in contact with a leader of far-right House Freedom Caucus, Rep. Scott Perry, R-Pa., whose own phone was seized in August as part of the investigation into the fake elector scheme.

Reviewing seized materials for any that might be privileged is a common step in criminal investigations — especially in sensitive ones targeting lawyers.

The review of the emails in this case occurred over the summer and was conducted by a team of prosecutors code-named “Project Coconut” that was walled off from the prosecutors running the main investigation, according to a person familiar with the matter.

Eastman, a professor of constitutional law, has long been a focus of the Justice Department’s efforts to unravel the fake elector scheme, which involved a broad array of characters, including pro-Trump lawyers, White House aides and numerous local officials in key swing states around the country.

Eastman has also been at the center of a parallel inquiry run by the House select committee investigating the Jan. 6, 2021, attack on the Capitol, which has accused him of conspiring with Trump to defraud the United States and obstruct the final certification of the 2020 election.

Encouraged by Perry, Trump considered then abandoned a plan in the days before the Capitol attack to put Clark in charge of the Justice Department as acting attorney general.