The House select committee investigating the Jan. 6 assault on the U.S. Capitol met behind closed doors with Kimberly Guilfoyle, who advised former President Donald Trump's 2020 re-election campaign and is also his son, Donald Trump Jr.'s fiancee. 

The former Fox News personality was seen entering the committee's offices around 10 a.m. on Monday. The Daily Mail first reported her appearance.

Her appearance came nearly two months after Guilfoyle and her lawyers abruptly ended a voluntary virtual interview by committee staff over frustration with its format. At the time, her lawyer said they had ended the interview after certain members of the panel appeared on the call, which Guilfoyle was not expecting. The panel, however, contended it had informed her lawyers that members could show up. It later issued a subpoena to Guilfoyle, compelling her testimony and records.

Guilfoyle's lawyer, Joe Tacopina, did not immediately respond to a request for comment on her appearance Monday. In a March statement responding to the panel's subpoena, he said she would "testify truthful to any question. She has done nothing wrong."

Guilfoyle is the latest member of the former president's inner circle to appear before the panel. Trump's daughter and former senior adviser, Ivanka Trump, met virtually with investigators for several hours earlier this month, following a request in January from the panel that she appear. Her husband Jared Kushner, also a former top Trump adviser, had spoken with the panel voluntarily in late March.