UN investigators have overwhelming proof that Hezbollah militants carried out the assassination of former Lebanese prime minister Rafiq Hariri, Canadian broadcaster CBC said Monday. The United Nations expressed concern that leaks of the special tribunal on Lebanons inquiries could influence its work on the 2005 bomb blast. CBC said evidence gathered by Lebanese detectives and UN investigators points overwhelmingly to the fact that the assassins were from Hezbollah. The broadcaster, which was to show a documentary on the killing on Monday, said it had obtained copies of mobile phone and other communications in the case. Other unconfirmed media reports have said the UN tribunal will announce indictments against Hezbollah members before the end of the year.