The court had concluded the arguments on quantum of sentence on Friday last week after taking into consideration submissions made by both the prosecution and defence lawyers as well as the lawyer of the victims.
On Monday, prosecution had sought death penalty for all the 24 people convicted for the gruesome killings.
The court said it has decided to award imprisonment for life without any time frame to the 11, who have been convicted for murder, while requesting the state not to use its power to remit the sentence after 14 years of imprisonment.