Chinese officials have rejected a request from the United States to have two U.S. Navy ships make port visits in Hong Kong amid continuing unrest, according to official reports Tuesday.

"The Chinese government denied requests for port visits to Hong Kong by the USS Green Bay and USS Lake Erie, which were scheduled to arrive in the next few weeks," Cmdr. Nate Christensen, the deputy spokesman for the US Navy's Pacific Fleet, told CNN in a statement.

The USS Green Bay, an amphibious transport dock shop, was to visit Hong Kong on Aug. 17, and the USS Lake Erie, a guided missile-carrier, was to dock in September. 

"The US Navy has a long track record of successful port visits to Hong Kong and we expect them to continue," Christensen added. "We refer you to the Chinese Government for further information about why they denied the request."

The Chinese government also rejected a port visit from the United States in 2018, after it kicked China out of a military exercise for deploying hardware to its man-made islands in the South China Sea. 

The United States is denying Chinas' accusations it and other foreign governments are behind Hong Kong's pro-democracy protests. 

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