WASHINGTON (AP) — A longtime adviser to the U.S. Director of National Intelligence has resigned after the government learned he has worked since 2010 as a paid consultant for Huawei Technologies Ltd., the Chinese technology company the U.S. has condemned as an espionage threat, The Associated Press has learned.

Theodore H. Moran, a respected expert on China’s international investment and professor at Georgetown University, had served since 2007 as adviser to the intelligence director’s advisory panel on foreign investment in the United States. Moran also was an adviser to the National Intelligence Council, a group of 18 senior analysts and policy experts who provide U.S. spy agencies with judgments on important international issues.