Two officials with the ICIG, investigator Frank Rucker and attorney Janette McMillan, met repeatedly with FBI officials to warn them of the Chinese intrusion, according to a former intelligence officer with expertise in cybersecurity issues, who was briefed on the matter. He spoke anonymously, as he was not authorized to publicly address the Chinese’s role with Clinton’s server.

Among those FBI officials was Peter Strzok, who was then the bureau’s top counterintelligence official.