Leidschendam (Netherlands), Jan 14 (Agencies): A UN tribunal investigating the 2005 assassination of former Lebanese Prime Minister Rafik Hariri was holding a public hearing on Friday to discuss a former Lebanese security chief's demand to see the evidence that led to him being jailed as a suspect for nearly four years.

The hearing at the Special Tribunal for Lebanon plays out against a backdrop of political turmoil in Beirut after Shiite militant group Hezbollah brought down the government of
Hariri's pro-Western son, Saad.

Maj Gen Jamil al-Sayyed, Lebanon's former chief of general security, and three other pro-Syrian officers were freed from a Lebanese jail in April 2009 for lack of evidence.

He claims false witnesses framed him and wants access to their evidence so he can sue them in local courts.

Hezbollah denounces the tribunal as a US-Israeli conspiracy. The court is widely expected to indict members of the Iranian-and Syrian-backed group soon for involvement in the massive truck bombing that killed Hariri and 22 others in Beirut.

Prosecutors are expected to send indictments to a pretrial judge next week. Their contents will not be made public until the judge confirms them, a process expected to take weeks.

Hezbollah had demanded Hariri reject the tribunal's findings even before they came out, but Hariri has refused to break cooperation with the court and its investigations into his father's murder.