A senior White House aide is deliberately feeding inaccurate stories to White House staffers in an effort to weed out those who are speaking to reporters, according to a New York Times report on Sunday.

Amid an ongoing battle with leaks of internal meetings and memos, President Donald Trump has reportedly remained fixated on determining who is passing information on to the press, the report said.

Trump’s obsession with identifying leakers has grown so much that when he’s speaking with outside advisers on the phone and a staffer’s name comes up, Trump will ask, “Is he the leaker? Is she the leaker?” according to The Times.