As it continues to expand its investigation into Trump’s attempts to falsely proclaim him the winner in several swing states, the House Committee investigating the U.S. Capitol Insurrection subpoenaed six additional people Tuesday.

The panel seeks testimony and records from people who, it claims, knew of or participated in attempts to send false “alternate voters” from seven states that President Joe Biden won.

“The Select Committee seeks information about efforts to send false electors to Washington, and change the outcome for the 2020 election,” said Mississippi Rep. Bennie Thompson (the committee’s Democratic chair). We are seeking testimony and records from former campaign officials as well as other people in different states that we believe may have pertinent information regarding the implementation and planning of these plans.

Gary Michael Brown and Michael Roman, who were directors of Trump’s 2020 reelection campaign, are among those being subpoenaed. The committee claims that the two men promoted election fraud and encouraged state legislators appoint false electors.

The four other individuals include Douglas Mastriano from Pennsylvania, Laura Cox (the former chair of Michigan’s Republican Party), Mark Finchem, Arizona State Rep., and Kelli Ward, Arizona Republican Party chair.

Not immediately returned messages requesting comments from Ward, Mastriano and Roman

Ward and her husband filed a lawsuit to stop a subpoena for their phone records. They were presidential electors and would have voted in Trump’s Electoral College if he had won Arizona. They signed a false document claiming that they were Arizona’s true electors despite Democrat Biden winning the state. The case has not been decided.

Mastriano is a former Army officer and is currently running for the Republican gubernatorial nomination in Pennsylvania. He was one of Trump’s most loyal supporters during the 2020 campaign. He helped organize and host a 4-hour hearing post-election, which Rudy Giuliani attended and that Trump addressed remotely.

Finchem was present on Capitol grounds Jan. 6, but he did not go inside the building. Finchem has been vocal in his criticism of the Arizona election results, claiming that Trump won despite all evidence.

He is currently pushing for a state legislative resolution that would overturn Arizona’s state certification of the 2020 presidential elections. It lists a number of conspiracy theories about election fraud. He is also running for the Republican nomination for secretary of state, Arizona’s chief election officer.

This latest subpoena comes more than a year after the committee issued 14 subpoenas to 14 people regarding false Electoral College certificates declaring Trump as the winner of Arizona.