Hariri tribunal says work not yet finished LEIDSCHENDAM, Netherlands, Jan. 18 (UPI) -- The tribunal probing the 2005 assassination of former Lebanese Prime Minister Rafik Hariri said it wants its mandated extended because its work isn't finished. The U.N.-backed Special Tribunal for Lebanon announced in a question-and-answer session conducted through its Twitter account Wednesday that it wanted an extension for its mandate. "The agreement between the U.N. and Lebanon states that our mandate will be renewed if our work isn't finished," a statement read. Our work is not over yet. The tribunal added that U.N. Secretary-General Ban Ki-moon will decide on how long to extend the mandate after consulting with authorities in Lebanon and at the U.N. Security Council. The court was established through an agreement between the United Nations and Beirut in 2006 and endorsed the following year. Last year, the tribunal issue arrest warrants for four members of Hezbollah wanted for Hariri's assassination. The tribunal had said the trial in the Hariri case would start this year regardless of whether suspects are in custody. Lebanese authorities reporting to the tribunal said they didn't have any luck in apprehending the suspects. Hezbollah tried to discredit the tribunal's evidence in the case, which relies in part on cellphone activity. Hezbollah claims Israel has infiltrated much of the Lebanese telecommunications sector, making the tribunal's case dubious.