( CNN ) -- India 's Supreme Court received an appeal challenging the death sentence of the only surviving gunman from the 2008 terror attack in Mumbai , authorities said Friday . The plea filed on behalf of Mohammed Ajmal Kasab , was `` under process , '' Supreme Court registrar Pukhraj R. Bora said . It was sent in by the authorities of the Mumbai jail where Kasab is being held , Bora said . No date has yet been set for hearing , he added . A trial court handed down the death sentence last year for Kasab , a Pakistani , on charges of murder , conspiracy and waging war on India . Mumbai 's High Court upheld his conviction and sentence in February this year . Convicts on death-row in India reserve the right to challenge the sentencing in the nation 's Supreme Court . They can also file a mercy petition with the country 's president if the Supreme Court also turns down their plea . During the November 2008 raids , 10 men attacked Mumbai landmarks , including the luxury Taj Mahal Palace and Tower and Oberoi-Trident hotels , the city 's Victoria Terminus train station , and the Jewish cultural center , Chabad House . More than 160 people died in the three-day coordinated attack . Kasab was photographed holding an assault weapon during the strikes . Indian forces killed nine suspects in the attack . India blamed the siege on the Lashkar-e-Tayyiba , a Pakistan-based terror group allied with al Qaeda . Authorities said Kasab was trained by the organization , which was banned in Pakistan in 2002 after an attack on India 's parliament . The group denied responsibility . The Mumbai attack derailed a peace process between India and Pakistan for about 15 months . This year , the two nuclear neighbors nations announced resumption of their fully-fledged dialogue after a series of high-level meetings over the past one year . This week , the foreign ministers of the two countries pledged in New Delhi they will not let talks slide again because of thorny issues that made their countries bitter enemies .
A trial court handed down the death sentence last year for Kasab . No date has been set for a hearing for the convicted gunman . More than 160 people died in the three-day coordinated attack in 2008 in different locations in Mumbai .