The announcement came after it was revealed that a US destroyer sailed near Xisha islands, which are located in the South China Sea and claimed by China, Efe news reported.
"China dispatched military vessels and fighter planes in response to warn off the US vessel," Foreign Ministry spokesperson Lu Kang said.
"The Chinese side strongly urges the US side to immediately stop such provocative operations that violate China's sovereignty and threaten China's security," he added.
Lu said the incursion was carried out under the pretext of "navigation freedom" without prior approval from China.
He emphasized that the islands were "an inherent part of the Chinese territory".
Although the US and China had reached a level of understanding following a meeting between Presidents Donald Trump and Xi Jinping in Florida, frictions between the two countries over the South China Sea continue.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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Doraiah Chowdary Vundavally is a Software engineer at VTech . He is the news editor of SocialNews.XYZ and Freelance writer-contributes Telugu and English Columns on Films, Politics, and Gossips. He is the primary contributor for South Cinema Section of SocialNews.XYZ. His mission is to help to develop SocialNews.XYZ into a News website that has no bias or judgement towards any.