MANILA — The Philippines is still asking China to withdraw three ships from a disputed shoal in the South China Sea almost six months after it promised to pull out, the foreign minister said Thursday. Foreign Secretary Albert del Rosario said that while the Philippines withdrew its own ships from Scarborough Shoal on June 4, as agreed by both countries, China's three government ships remained in the area. “They have three ships in the vicinity right now. They have never really left. We are continuing to ask them to honor our sovereignty and... we are asking them to pull out their ships as agreed upon,” he said. Government vessels from the Philippines and China began facing off over the shoal in April as both countries pressed their conflicting claims over the islets. Del Rosario told ABS-CBN television that in an effort to ease tensions, both countries agreed on June 4 to pull out their ships. But while the Philippines kept its commitment, China did not, he said. He said that in June a Chinese embassy official initially said the weather was too rough for their ships to move but did not say when they would leave. Chinese embassy spokesmen could not be contacted for comment. China and the Philippines, along with Brunei, Malaysia, Taiwan and Vietnam, have overlapping claims in the South China Sea, which includes major shipping lanes and is believed to be rich in mineral and oil resources. The Philippines has become increasingly vocal in opposing China's claims, raising the issue in international meetings despite Chinese efforts to play down the matter. Del Rosario said China did not want to “internationalize” the issue by having the Philippines discuss it with other claimants, other countries or even with the press. “Obviously that is not our position. Our diplomatic tools are very limited and internationalization must remain a viable tool for us,” he said. Meanwhile, China has granted its border patrol police the right to board and turn away foreign ships entering disputed waters in the South China Sea, state media reported Thursday. The move comes after Beijing infuriated its neighbors by issuing new passports containing a map showing its claim to almost the whole of the South China Sea. Vietnam and the Philippines are refusing to stamp the documents. The southern Chinese province of Hainan passed new regulations this week allowing local police “to board, seize and expel foreign ships illegally entering the province's sea areas”, the Global Times reported. — Agencies