KUALA LUMPUR - The youth wing of Malaysia's ruling party gathered at the Singapore High Commission here on Monday (Nov 20) afternoon, accusing Singapore Prime Minister Lee Hsien Loong of belittling Malaysia's bid to review territorial claims over Pedra Branca, after PM Lee suggested on Sunday that it was politically motivated ahead of national elections due by August next year.

Earlier on Monday, Umno Youth chief Khairy Jamaluddin "condemned in the strongest terms" the claim by Mr Lee, pointing out that it has been more than a year since new information was found regarding the dispute over the rocky outcrop northeast of Singapore, and Malaysia had yet to dissolve Parliament to pave the way for polls.

"(It) is an irresponsible accusation that can damage the good relations between Malaysia and Singapore. It is easy to gain political support by making accusations against other countries as done by PM Lee with his statement during the PAP convention," Mr Khairy said in a press statement issued only in Malay.

"But unlike him, Malaysia has always viewed the issue of sovereignty seriously and not just to pull support during elections or political conventions only," the MP for Rembau in Negeri Sembilan, added.

"If there's any issue, please raise this through the right diplomatic channel," he said after handing over the memorandum to Deputy High Commissioner Mark Neo.

Mr Khairy had said in his statement that the request for the ICJ to review its decision was done on Feb 2 this year (2017), after new facts were discovered on Aug 4, 2016 in archives kept by the United Kingdom.

Quizzed over the six-month gap - during which time Prime Minister Najib Razak had said polls could be held "anytime soon" - Mr Khairul said time was needed to gather related documents and information.

"The time frame is within stipulated time given by the international courts. It is within our right and Malaysia is confident of its new findings," he said.

Malaysia's application to revise ICJ's judgment stemmed from the three documents which the country claims to establish new fact that highest level of officials in the British colonial and Singapore administration acknowledged that Pedra Branca did not form part of Singapore's sovereign territory during the relevant period.