(VOVworld) - Libya opened the trial of 2 sons and 30 ex-officials of deposed leader Muammar Gaddafi on Monday, including Prime Minister Baghdadi al-Mahmoudi and Foreign Minister Abdul Ati al-Obeidi, but it was quickly adjourned as some of the investigations had not been completed.

Officials of Muammar Gaddafi's government sit behind bars during a hearing at a courtroom in Tripoli, April 14, 2014. (Photo: Reuters)

Neither son, Saadi Gaddafi nor Saif al-Islam, was present in court at Tripoli's Al-Hadba prison. Chief investigator Sidiq Al-Sour said Saadi was absent because an investigation was underway but the trials for other defendants still continued. Authorities are considering whether to hold a closed or public trial for Saif who is still held by a group of former rebels in Western Libya.

All defendants face charges of murder, kidnapping, incitement to riot, embezzlement, and destruction of property.