The Federal Communications Commission admitted Monday that the agency got it wrong when it claimed its comment system fell victim to a distributed denial-of-service attack during the public debate about “net neutrality” Internet regulations.

Following an investigation by the Office of the Inspector General, FCC Chairman Ajit Pai said he was “deeply disappointed that the FCC’s former Chief Information Officer (CIO), who was hired by the prior Administration and is no longer with the Commission, provided inaccurate information about this incident to me, my office, Congress, and the American people,” noting that the behavior was “completely unacceptable.”