An attorney representing the far-right Oath Keepers in a civil lawsuit over the Jan. 6 attack on the U.S. Capitol is asking to withdraw from the case, saying the group has failed to respond to his messages or pay him.

Kerry Morgan, of counsel with the firm Pentiuk, Couvreur & Kobiljak, filed the motion Thursday. He’s been representing the Oath Keepers in a lawsuit filed by Democratic members of Congress that alleges a conspiracy among that group and others, including former President Donald Trump, to block members of Congress from certifying the Electoral College results.