Military Examining Magistrate Judge Fadi Sawan carried on the investigations into the Ksara bombing file, as he listened to the testimony of some witnesses, the National News Agency reported on Thursday.
NNA added that 13 persons have been detained so far over involvement in the case and 5 others were sentenced in absentia.
In August, a bomb blast that hit near the mainly Christian town of Zahle, killed a Syrian woman and wounded at least eight other people.
Lebanon has been struck by several deadly bombings since the conflict in neighboring Syria erupted in 2011.
In June, eight suicide bombers, some of them linked to the Islamic State jihadist group, attacked Al-Qaa village near the Syrian border, killing five civilians.
Source Al Nahar