Court upholds Mumbai gunman Mohammed Ajmal Kasab's death sentence

India's Supreme Court has upheld the death sentence of the only surviving gunman of the deadly 2008 Mumbai attacks that killed 166 people.

Mohammed Ajmal Kasab, 22, was convicted in May 2010 of murder, waging war against India, conspiracy and terrorism and sentenced to death.

The sentence on the Pakistani national was confirmed by the state High Court in February last year.

Today's Supreme Court order was expected. It was not immediately clear what Kasab's next step would be, but legally he can still appeal to India's president for mercy.

Kasab and nine other Pakistani gunmen rampaged through Mumbai for three days in November 2008, attacking two luxury hotels, a Jewish centre and a packed railway station.