A three-member bench led by Justice Md Shawkat Hossain started announcing the verdict Sunday morning and adjourned in the afternoon.
Justice Hossain said the court would convene on Monday, when the sentencing is expected.
The larger bench with Justice Md Abu Zafor Siddique and Justice Md Nazrul Islam Talukder as the two other members was formed in 2015 to hear the case, largest in Bangladesh’s history in terms of the number of convicts.
The mutiny that continued for two days eight years ago, a month after a new government took office, sent shock waves across Bangladesh and to the rest of the world.
In November 2013, a special court of an additional metropolitan sessions judge awarded the death penalty to 152 jawans and non-commissioned officers of the erstwhile Bangladesh Rifles or BDR for the massacre.
The court sentenced 161 others to life in prison and 256 to three to 10 years in jail. It acquitted 277.
Never before had so many accused, 850 in total, been tried in a single case in the history of Bangladesh.
Four of the accused died during the trial while BNP leader Nasir Uddin Ahmed Pintu died after conviction.
The bench heard the death references, and appeals for more than a year and put the case up for the verdict on Apr 13.