A Western-led push for a war crimes probe into Sri Lanka's war to destroy the Tamil Tigers is motivated by a "hidden agenda" to oust President Mahinda Rajapaksa's government, the island nation's defence secretary said on Thursday. Defence Secretary Gotabaya Rajapaksa, the architect of Sri Lanka's destruction of the separatist Tamil Tigers in 2009 and the president's younger brother, also expressed frustration that post-war rehabilitation efforts were being ignored. Sri Lanka's military crushed the Tamil Tigers to decisively end one of Asia's longest-running modern wars in May 2009, but since the waning months of the conflict the government has been under increasing pressure over accusations of civilian deaths. A panel commissioned by the U.N. secretary-general in April said it had "credible evidence" both sides had committed possible war crimes, and in particular alleged the government had killed thousands of civilians. "There is a hidden agenda behind these allegations. Their main requirement is to change the president and the government who are not fulfilling their desires," Gotabaya Rajapaksa told a forum organised by the Federation of National Organisations. -- SPA