New photographs have emerged which raise fresh questions about the conduct of Sri Lanka’s armed forces during the final stages of the operation against Tamil rebels and have led to claims the 12-year-old son of the militants’ leader may have been summarily executed.Related StoriesIs this really Japan's year to return to the light?Why Burma is going back to schoolPakistan faces growing anger over sectarian bombings after latest blastThousands marry in first Moonie wedding since founder's deathPakistan close to boiling point after slaughter of Shia minority