Lawyers for several Oath Keeper defendants are refusing to tell the U.S. Department of Justice if former Trump ally Sydney Powell is secretly funding their clients’ defense as they face numerous charges related to their involvement in the Jan. 6 attack on the U.S. Capitol.

The claim came via a filing from U.S. Attorney Matthew Graves in the U.S. District Court for the District of Columbia Wednesday. It pointed to reporting from several news outlets that alleged Powell is funding lawyers for Stewart Rhodes, Kelly Meggs, Connie Meggs and Kenneth Harrelson, all charged with some of the most serious offenses related to the attack, including seditious conspiracy.