A former top aide to former President Donald Trump took part in a deposition with the House select committee investigating the Jan. 6, 2021, attack on the U.S. Capitol.

Hope Hicks, who served as Trumps aide before becoming communications director and eventually landing a role as a senior White House advisor , took part in an interview with the Jan. 6 committee Tuesday, The New York Times first reported. The details of the interview have not yet been made public.

The House committee investigating the Capitol attack that left five dead and more than 140 officers injured voted unanimously earlier this month to subpoena Trump to testify under oath about his involvement in the attack and his attempt to stop the certification process for President Joe Biden . Trump responded to the news by issuing a 14-page letter that ranted about a Rigged and Stolen election.

Rep. Liz Cheney (R-Wyo.), the committees vice chair, said she wouldnt accept live television testimony from Trump.

We are going to proceed in terms of the questioning of the former president under oath, Cheney said on Meet the Press on NBC. It may take multiple days, and it will be done with a level of rigor and discipline and seriousness that it deserves. We are not going to allow hes not going to turn this into a circus.