The Philippine Coast Guard (PCG) is committed to sustaining a presence in a disputed area of the South China Sea to ensure China does not carry out reclamation activities at the Sabina Shoal, its spokesperson said on Monday.

The coast guard said on Saturday it had deployed a ship to Sabina Shoal, where it accused China of building an artificial island, amid an escalating maritime row, adding that two other vessels were in rotational deployment in the area.

Since the ship's deployment in mid April, the coast guard said it had discovered piles of dead and crushed coral that had been dumped on the sandbars of Sabina Shoal, altering their sizes and elevation.