Bangladesh officials say President Iajuddin Ahmed has rejected appeals for mercy by six Islamist militants on death row.
They said the six included the leader of the banned militant group Jumaat-ul-Mujahedin, Shayek Abdur Rahman, and Siddikul Islam, the leader of another outlawed Islamist group, Jagrata Muslim Janata Bangladesh.
The six were sentenced to death last year for masterminding a series of bombings in 2005 that killed at least 30 people.
Last November, the Supreme Court upheld their death sentences.
The militants were fighting to impose Islamic law in Bangladesh, a Muslim-dominated but secular democracy.
They were captured by Bangladesh security forces a year ago.