"One (1993 Mumbai blasts) convict named Tahir Merchant, who was lodged in the Yerawada prison, was admitted to Sassoon Hospital after he complained of chest pain. However, he died there during treatment around 3:45 am," Dr Bhushankumar Upadhyay, Additional Director General of Prisons Department said.
"Merchant was extradited to India from Abu Dhabi and was arrested by the Central Bureau of Investigation in 2010. He had been serving his jail term in Yerwada central prison in Pune," an officer said.
According to police, Merchant had arranged money to carry out the blasts, and was also linked to conspirators Tiger Memon and Dawood Ibrahim.
In 2007, a special anti-terror TADA court had convicted 100 accused, including actor Sanjay Dutt, in connection with the blasts. In September last year, a special court awarded death sentence to Tahir Merchant and Firoz Khan, while awarding life imprisonment to prime accused Abu Salem and Karimullah Khan in the 1993 Mumbai blasts case.
The court had held that Merchant was amongst the main conspirators.
He worked with absconding conspirator Tiger Memon, and participated in several conspiracy meetings in Dubai. Tahir made travel arrangements, financed the stay and travel of several co-accused and facilitated their training in Pakistan, the court noted.
"The role of Tahir in conspiracy is prominent. He is one of the initiators of the conspiracy," the court had said in its ruling in June 2017.
Another convict in the case, Mustafa Dossa had died of cardiac arrest at JJ Hospital in Mumbai in June last year. The Mumbai blasts had left 257 people dead and 713 seriously injured. It had destroyed properties worth Rs 27 crore.