The Turkish Supreme Court of Appeals annulled a verdict yesterday by a lower chamber of the court on non-prosecution of public officials regarding a helicopter crash that killed opposition Great Unity Party (BBP) leader Muhsin Yazıcıoğlu in 2009.

Yazıcıoğlu and five others were killed in southern Turkey's Kahramanmaraş when their helicopter crashed in a mountainous area.

The BBP has long claimed that the crash was "an assassination" and blamed officials linked to Gülenist Terror Group (FETÖ) of a cover-up of the incident.

The former governor and police chief of Kahramanmaraş and seven others will now face trial if prosecutors decide to pursue a new investigation over their alleged negligence and cover-up.