New Delhi, April 5 -- The Philippines government has said that more than 250 Chinese vessels which it believes are operated by militia, have been spotted near six Manila-claimed islands and reefs in the disputed Spartly islands of the South China Sea and demanded that China immediately remove them. The gathering of the Chinese-flagged vessels, along with four Chinese Navy ships at a Chinese-occupied manmade island base, "is hazardous to navigation and safety of life at sea" and may damage coral reefs and threaten the Philippines' sovereign rights, a government body overseeing the disputed waters said. The Philippine military said it could not confirm if 92 vessels spotted at Chigua Reef and 84 at Gaven Reef were part of the original floti...