President Trump approved of his press secretary’s move to check the phones of his communication staff in an effort to prevent leaks from inside the White House, according to a report.

The report from CNN follows leaked details of Sean Spicer’s crackdown on his own staff as the White House ramps up security measures in the wake of leaks to the media.

{mosads}Spicer called staffers into his office, where he conducted phone checks that were overseen by White house attorneys, searching for any communications with the media. He also warned the staffers not to reveal details of that meeting.

Spicer denied that Trump OK’ed the decision, CNN reported.

“[Trump] did not sign off or even know what I did. That is not accurate,” he said. “I don’t believe he even knew there was a gaggle and in no way was it discussed with him or any other staffer.”

Trump has repeatedly expressed his frustration over leaks coming out of his administration.

Trump most recently called out the FBI on Friday for being “totally unable” to stop leaks within its own agency.

The FBI is totally unable to stop the national security “leakers” that have permeated our government for a long time. They can’t even……

— Donald J. Trump (@realDonaldTrump) February 24, 2017