The jail authorities can execute Motiur Rahman Nizami anytime if he decides not to seek presidential mercy for saving his life.
After receiving the copy of the verdict, the jail authorities can start the process for executing the death row war criminal, he said while talking to reporters at his office.
The government is the authority to fix the time of execution, the attorney general said.
Nizami, the chief of Jamaat-e-Islami which opposed the birth of Bangladesh, can still seek presidential mercy for saving his life.
The full text of Supreme Court judgement on war criminal Motiur Rahman Nizami scrapping his review petition against death penalty has reached the tribunal that tried him and awarded death penalty.
The verdict reached International Crimes Tribunal (ICT) at 5:08pm, sources said.
Supreme Court released the verdict earlier in the day after the judges concerned signed on it, Additional Registrar of the High Court division Sabbir Faiz confirmed The Daily Star.
The ICT will forward it to the home ministry, district magistrate and jail authorities to continue with execution, said Additional Registrar of the Supreme Court Arunav Chakraborty.
The final straw that Nizami now has is to seek mercy from the president.