Malaysia will protest against what it called the intrusion of a Chinese Coast Guard ship into its waters north of Borneo Island, the Wall Street Journal reported, in another departure from the country's previously soft approach to South China Sea disputes.

National Security Minister Shahidan Kassim was quoted as telling the Journal that Malaysian Prime Minister Najib Razak will raise the issue directly with Chinese President Xi Jinping.

The report comes after Shahidan posted pictures on Facebook of what he said was a Chinese ship anchored at Luconia Shoals, an area of islets and reefs about 150 km (93 miles) north of Malaysian Borneo.