Court officials in India say the only surviving gunman from the deadly 2008 Mumbai attacks has filed an appeal to the Supreme Court to have his death sentence overturned.

The Mumbai court convicted Pakistani national Mohammed Ajmal Kasab last year of a string of crimes, including murder, waging war against India, and terrorism, and sentenced him to death.

Kasab's death sentence was confirmed by the state High Court in February.

Kasab was one of 10 young Pakistanis who attacked luxury hotels, a Jewish center and a busy train station in India's financial capital in November 2008. The three-day siege killed 166 people.