President Donald Trump once again attempted to dismantle the credibility of former FBI deputy director Andrew G. McCabe and former FBI director James B. Comey in several tweets on Sunday that also questioned the work of special counsel Robert Mueller.

In a post taking aim at McCabe, who was abruptly fired on Friday for allegedly making an unauthorized disclosure to the news media, the president questioned the legitimacy of memos that the former FBI official reportedly wrote right after he would have conversations with Trump and Comey.