Dhaka: Harkat-ul-Jihad (Huji) chief Mufti Abdul Hannan and his associates—Delwar Hossain Ripon and Sharif Shahedul Alam Bipul— were executed on Wednesday night over the grenade attack on former British envoy Anwar Choudhury in Sylhet in 2004.

Of them, Mufti Hannan and Bipul were executed at Kashimpur Central Jail at 10:01pm, said Mizanur Rahman, jail superintendent of Kashimpur High Security Central Jail.

Executioner Raju along with two others acted as hangmen.

On the other hand, Ripon was hanged at Sylhet Central Jail at the same time, said senior jail super M Sagir Mia.

Inspector General of Prisons Brigadier General Syed Iftekhar Uddin was present at Kashimpur Central Jail.

Their bodies will be sent to their respective villages for burial.

The three militants were hanged as President Abdul Hamid rejected their petitions seeking presidential clemency.

On March 19, the Appellate Division upheld the death sentence of Mufti Hannan, Ripon and Bipul after hearing the review petitions filed by the three death-row convicts.

On December 7, 2016, the SC bench, headed by Chief Justice SK Sinha, upheld the death penalty of the three in the case rejecting appeals filed by the Huji chief and Bipul challenging the High Court verdict that had upheld their death sentence awarded by the tribunal.

On February 11, 2016, the High Court delivered the verdict upholding the death sentence of the three.

In 2004, the then British High Commissioner Anwar Choudhury came under a grenade attack while coming out of Hazrat Shahjalal's shrine in his hometown Sylhet.

The envoy and 40 employees of the Sylhet district administration were injured in the attack.

Assistant sub-inspector Kamal Uddin died on the spot while two constables -- Rubel Ahmed and Habil Miah -- succumbed to their injuries at hospital.