Elon Musk visited the National Security Agency on Wednesday, current and former U.S. officials said, meeting with leadership a week after saying the intelligence and cybersecurity outfit needed an overhaul.

Musk has previously criticized the NSA, tweeting March 6 that the NSA “needs an overhaul,” attaching a graphic depicting a group of college-aged people and a list of universities where the agency would be doing recruitment.

Elon Musk paid an unannounced visit to the National Security Agency on Wednesday and met with its chief, an NSA spokesperson said, days after he called for revamping the country’s top cyberespionage hub,