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

The Philippines said on Monday there was no truth to news reports that Beijing has seized control of a disputed reef in the South China Sea, after its personnel landed on the unoccupied sandbars and found no Chinese presence there.

The standoff over Sandy Cay, which lies close to military outposts built by both Beijing and Manila, was the latest between the two nations.