Libyan authorities on Sunday announced the recovery of 12 unidentified bodies in mass graves in the city of Tarhuna, some 90 km south of the capital Tripoli.

Abdul-Aziz Jafri, spokesman for the General Authority for Research and Identification of Missing Persons, told Xinhua that the 12 bodies were recovered from five newly discovered mass graves in the city.

A total of 86 bodies have been recovered in Tarhuna since the beginning of a search in June, while Tripoli has seen the recovery of 28 bodies so far, said Jafri.

The forces of the UN-backed Libyan government have been accusing the rival east-based army of mass killings in Tarhuna.

The east-based army and the UN-backed government had been engaged in a deadly armed conflict for more than a year in and around Tripoli.

The conflict ended in early June with the UN-backed government announcing the takeover of all western Libya after the withdrawal of the east-based army.

Tarhuna had been the main military operation centre of the east-based army before the city was taken over by the UN-backed government.