After the second panel of witnesses was sworn in, Rep. Zoe Lofgren, D-Calif started questioning Byung "Bjay" Pak, who served as U.S. Attorney in the Northern District of Georgia during the Trump administration and was appointed by Trump.

Pak said Attorney General Bill Barr "asked me to find out what I could" about claims of voter fraud in Georgia raised by Trump lawyer Rudy Giuliani in a public hearing, but said both he and his successor were "unable to find any evidence of fraud which affected the outcome of the election."

Lofgren then questioned Al Schmidt, the former GOP city commissioner who supervised the 2020 election in Philadelphia, about investigating claims about thousands of dead people voting in Philadelphia.

"Not only was there no evidence of 8,000 dead voters voting in Pennsylvania -- there was not even evidence of eight," Schmidt said.

Chairman Bennie Thompson gaveled the hearing back in shortly after 12:15 p.m. for the second panel of witnesses.

The three witnesses are Al Schmidt, a former Republican city commissioner in Philadelphia who repeatedly debunked claims of fraud in the state, Ben Ginsberg, a veteran GOP election lawyer, and Byung "BJay" Pak, a former U.S. Attorney for the Northern District of Georgia and Trump appointee.

Rep. Zoe Lofgren, D-California confirmed publicly that Rich Donoghue, a former acting Deputy Attorney General at the Justice Department, will testify in person before the committee. ABC News has previously reported he was in talks to testify.

Donoghue will appear in Wednesday's hearing that will focus on Trump's "pressure" campaign against the Justice Department to investigate fraud, as vice-chair Rep. Liz Cheney announced in last week's hearing.

Chairman Bennie Thompson called a 10-minute recess for the committee's Monday hearing shortly after noon.