Attorneys representing the Brooklyn Supreme Court justice’s son photographed inside the U.S. Capitol during the Jan. 6 insurrection have called on the U.S. Attorney’s Office for the District of Columbia to reveal more information about the allegations against him, arguing in a motion for a bill of particulars that he “does not know why he is charged” with a pair of felonies.

Aaron Mostofsky, son of Brooklyn Supreme Court Justice Steven Mostofsky, was charged with civil disorder and assaulting, resisting or impeding law enforcement officers, along with other offenses, after appearing in the Capitol dressed in furs and a bulletproof vest.