"It will take at least three years for the trial to begin in the case, considering a huge backlog of pending cases before the special Maharashtra Control of Organised Crime Act (MCOCA) court," defence lawyer Sharif Shaikh said.

Three blasts at close intervals shook Mumbai's diamond and gold hubs - Opera House and Zaveri Bazar - and a busy commercial area of Dadar July 13 last year, killing at least 27 people and leaving around 125 injured.