China has lodged stern representations with the United States over the expelling of Chinese officials, foreign ministry spokesman Geng Shuang said at a regular briefing in Beijing on Monday.
The U.S. government covertly moved to expel two officials from the Chinese embassy earlier this year after they drove onto a military base, the New York Times reported on Sunday.
One of the two Chinese officials is believed to be an intelligence officer operating under diplomatic cover, the report said.