U.S. Sen. Bob Menendez is set to enter a plea on Monday to a new indictment charging him with conspiring to act as an unregistered foreign agent for the Egyptian government.

Federal prosecutors on Oct. 12 accused the New Jersey Democrat – until recently the chair of the Senate Foreign Relations Committee – of taking actions from 2018 to 2022 on behalf of Egyptian military and intelligence officials.

Menendez is expected to be asked to enter a plea to the new charge at the 3 p.m. ET arraignment before U.S. District Judge Sidney Stein. His lawyers did not respond to a request for comment.