The U.S. House of Representatives Select Committee probe into the deadly January 6 riot at the Capitol subpoenaed four Trump administration officials.
They were the former president's top political advisor Steve Bannon, former chief of staff Mark Meadows, former White House Deputy Chief of Staff Dan Scavino, and former Defense Department official Kash Patel.
In a statement on Thursday, the panel's chairman Bennie Thompson said they were asked to produce materials and appear for depositions in the coming weeks.
Thompson said Meadows, a former congressman, was reportedly in communication with state and federal officials as part of an effort to overturn the 2020 election or prevent Biden's certification.
He also said that Meadows was reportedly in communication with organizers of the January 6 rally.
As for Steve Bannon, who was fired from the White House in 2017 but later mended ties with Trump, Thompson noted he had been involved in multiple conversations to persuade Congress members to block certification of Trump's election defeat.
And quoted him as stating on January 5, that 'all hell is going to break loose tomorrow.'
Nearly 600 people have been arrested on charges related to when a mob of Trump supporters stormed the Capitol as Congress certified Joe Biden's election victory.