A court in the Indian city of Mumbai is due to begin hearing an appeal by the sole surviving gunman of the attacks on the city in November 2008.
Mohammad Ajmal Amir Qasab, a Pakistani national, is expected to contest the death sentence passed by a special court in May.
More than 170 people died when Qasab and nine other militants attacked various targets.
Qasab was found guilty of mass murder and waging war against India.
Due to security concerns, he will appear at the high court in Mumbai via a video link from prison.
During the appeal hearing – which is expected to last several months – a panel of judges will review evidence previously submitted.
But this might not be the gunman’s final legal challenge; if he loses this appeal he has the right to take his case to the country’s Supreme Court and then to the president of India.
Ten gunmen attacked Mumbai on 26 November 2008. All of them except Qasab were killed during the attacks.
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