The DHKP-C terrorist, Hasan Biber, is believed to be one of the perpetrators of the twin bomb attacks in 2013 that targeted the Justice Ministry and the ruling Justice and Development (AK) Party headquarters in the Turkish capital, Ankara.

He had also been convicted in Greece after he was captured in a speedboat carrying arms and explosives from Chios Island in Greece by Greek coastguards on July 30, 2014.

Biber was arrested in November 2017 along with nine other DHKP-C members on the charges of being a member of a terrorist organization, having explosives and gun in possession as well as forged documents.

However, the Nafplio Court of Appeal in Greece decided against the extradition of Biber and sent him behind bars again pending trial.

The Greek courts had previously rejected the extradition of DHKP-C members, Mehmet Dogan, Sadi Naci Ozpolat and Hazal Secer.