The UN-backed special court investigating Hariri's murder published the 47-page indictment against four members of Hezbollah for alleged involvement in the deadly truck bombing that killed Hariri in 2005.

The publication comes after the Special Tribunal for Lebanon said last week that Lebanese authorities had been unable to arrest the four suspects or serve them with their indictments. Hezbollah has denied involvement and said it will never turn over the suspects. Still, the suspects could be tried in absentia.

Former Prime Minister Saad Hariri, the son of the late leader, urged Hezbollah's leader to hand over the suspects and cooperate with the tribunal. "What the Hezbollah leadership is asked to do is simply to declare cutting links between it and the accused. This will be a historic stance that all Arabs and Lebanese will remember," he said in a statement released by his office.

The indictment says the assassins tracked Hariri's movements over several weeks to establish the routes and movements of his convoy and the location of his vehicle. On the day of the murder, they detonated some 2,500 kilograms of explosives packed into a Mitsubishi van parked near a hotel on a coastal road.

The blast killed Hariri, eight members of his convoy and 13 passers-by along with the suicide bomber, a man whose identity has not been established. It wounded 231 people.

Prosecutors acknowledge in the indictment's preamble that they have no direct evidence linking the suspects to the attack. The file relies to a large extent on circumstantial evidence "which works logically by inference and deduction," the indictment said.

Tribunal prosecutor Daniel Bellemare, however, said: "The full story will only unfold in the courtroom, where an open, public, fair and transparent trial will render a final verdict."