The Washington Post reported Wednesday that the Justice Department expanded its investigation into the Capitol riots after issuing subpoenas to two people.
The failed attempt to overturn the election took place in Arizona, Georgia, and New Mexico.
Donald Trump was involved in the January 6 insurrection, according to Rep. Adam Schiff.
The FBI confirmed to The Post that agents conducted court-authorized law enforcement activity at home addresses that appeared to belong to Brad Carver, a Georgia lawyer who claimed on an official document to be one of Trump's "fake" electors.
The individuals who claimed to be Trump's electors were issued subpoenas.
The Justice Department, Carver, and Lane did not reply to Insider's request for comment. The Post had messages for Carver, but he didn't reply.
The targets of the subpoenas suggested that the department is expanding its investigation into the false elector scheme.
Some of the 15 electors who were supposed to vote for Trump but were replaced on the day of the electoral college vote have been interviewed by federal investigators.
American Oversight, a DC-based watchdog group, obtained fake electoral certificates of pro-Trump electors in seven battleground states in order to try to make it appear that Trump won the majority of votes.
The fake certificates were assembled by groups of Trump supporters in seven states in an unsuccessful attempt to replace the legitimate electors who had been chosen by voters.
The developments in the Justice Department's investigation come ahead of a January 6 House panel hearing in which former DOJ officials are expected to testify.