Türkiye's highest appeals court has upheld multiple life sentences handed to three brothers convicted for their roles in the failed July 15, 2016 coup attempt, finalizing one of the country's most prominent cases involving members of the Gülenist Terror Group (FETÖ) orchestrating the coup.

As the Sabah newspaper reported, the Court of Cassation approved convictions against former military officers Hasan, Hüseyin and Furkan Aslanbay, ruling that the sentences imposed by lower courts should stand.

According to court rulings, the three brothers served in different branches of the Turkish Armed Forces (TSK) and participated in separate operations carried out by coup plotters on the night of July 15.

Former First Lt. Hasan Aslanbay was assigned to the Search and Rescue (MAK) unit based in Izmir and took part in the team that traveled to the southwestern resort of Marmaris, where President Recep Tayyip Erdoğan had been staying before leaving shortly before the attack. Prosecutors said Hasan Aslanbay served as a machine gunner aboard a Sikorsky helicopter used during the operation.

He was convicted of violating the constitution, attempting to assassinate the president, and two counts of intentional killing. The court sentenced him to four aggravated life prison terms and upheld an additional 24-year prison sentence for offenses including unlawful deprivation of liberty and causing injury.