Kasab was sentenced to death last year for waging war against India. 166 people died during 26/11 after ten terrorists, including Kasab, sailed into Mumbai and unleashed attacks in different parts of the city.
Legal procedure needs the High Court to ratify a death sentence given by a lower court. But in addition to signing off on the earlier verdict, the Bombay High Court also considered - and dismissed today - Kasab's appeal against his death sentence.
The terrorist can now appeal in the Supreme Court against today's verdict.
Kasab was not allowed to attend court hearings in the Bombay High Court for security reasons. He is kept in a special bomb-proof and bullet-proof cell at Mumbai's Arthur Road Jail.