The head of the international investigation committee looking into the assassination of former Prime Minister Rafik Hariri returned to Lebanon on Thursday, judicial sources said. Serge Brammertz and the investigation team moved to Cyprus last month after the war with Israel began. He resumed his work in Lebanon Thursday by hearing the statements of several witnesses in the case. The sources said Brammertz was seeking to gather more information and evidence for his third report, which is expected to be submitted to the Security Council in mid-September. They added that the report might include facts and descriptions that were not mentioned in the two past reports. Meanwhile, calls and meetings are expected to increase between the officials at the UN and the Justice Ministry to discuss the means to create an international tribunal to try those accused of the crime. The sources said Brammertz informed the relevant Lebanese officials of the need to form an international tribunal as soon as possible because his final report "depends on its creation."