"Vietnam requests that China immediately put an end to these wrongful activities and withdraw the military equipment it had illegally deployed on Vietnam's Hoang Sa [the Vietnamese name of the disputed islands]," the diplomat said, as quoted by the VnExpress newspaper.
Earlier this month, the ImageSat International company reported that Beijing had removed missile systems from one of the disputed islands. Soon after that, the company reported that the systems had been returned.
READ MORE: China Deploying Missile Systems on Disputed Spratly Islands — Reports
The Paracel islands have been under China's control since 1974, but are at the same time claimed by both Taiwan and Vietnam.
READ MORE: Hide-And-Seek: Chinese Missile Launchers Reportedly Reappear in S China Sea