President Trump has fired his White House personal assistant John McEntee, who had been with the president since early in his campaign, an administration official confirmed Tuesday. The president’s campaign then announced McEntee will rejoin the campaign as a senior adviser of operations.

McEntee is the latest in a series of departures by West Wing officials, including communications director Hope Hicks and staff secretary Rob Porter. It was not clear why McEntee was let go. The Wall Street Journal first reported on the firing, citing an unspecified security issue.

Lemme guess: McEntee was working on the campaign as part of his WH duties and someone just discovered that doing so was breaking a law that we’re all going to learn about in the next week or so.