Bangladeshi Islamist Mohammad Kamaruzzaman, who was found guilty of a genocide during the 1971 independence war, will be hanged to death on Saturday.
The Supreme Court had, earlier this week, rejected his final appeal against the death sentence, and Kamaruzzaman reportedly refused to seek clemency from the President.
On Friday, activity around the Dhaka Central Jail had prompted speculations that the hanging could take place on Saturday itself.
Bangladeshi home minister Asaduzzaman Khan confirmed the speculations by telling reporters that the Jamaat-e-Islami leader will be hanged on 11 April, according to AFP.
Security outside the jail was increased on Friday evening, and items such as bamboo poles and tarpaulins, usually seen during executions, were taken inside the jail, according to Bangladeshi News 24.
Jail officials told the paper that the bamboo poles and tarpaulin will be used to make a makeshift screen to ensure the execution is not seen by the public.
"Everything is ready. We'll be able to execute the sentence once we get the order," a jail official told Bangladesh News 24.
Kamaruzzaman was convicted of crimes such as abduction and mass murder, and was sentenced to death by a domestic war crimes court in 2013.
He was accused of slaughtering as many as 120 unarmed men of a village, which has come to be known as "The Village of Widows".