The fate of the other four men found guilty of the blasts along with Abu Salem, a prominent member of the group that planned the attack, was not immediately known.
In June, a court had ruled six men, including Abu Salem, guilty of involvement in the blasts that shook Mumbai more than two decades ago, but one died in prison before sentencing.
Investigators had said the bombs were ordered by India’s most wanted man, gangster Dawood Ibrahim, to avenge the demolition of the historic Babri mosque by Hindu hardliners in 1992, during a period of religious conflict.