China and the Philippines have each unfurled their national flags on tiny sandbars in the South China Sea, staking competing sovereignty claims in strategic waters seen as a potential flashpoint for global conflict.

BEIJING (AP) — China says six Filipinos landed on a tiny outcropping that both countries claim in the South China Sea, days after photos emerged of Chinese coast guard officers displaying a Chinese flag on the same group of sandbars.

The Philippines pushed back by unfurling its own flag at disputed Sandy Cay, condemning China's "illegal presence."