"Arif was hanged to death on Saturday at 10.30 p.m." Xinhua news agency quoted jail official Jannatul Farhad, in Khulna, about 140 km from Dhaka, as saying.
Senior assistant judges -- Jagannath Pandey and Sohel Ahmed -- were killed in a suicide bomb attack in Jhalakathi on November 14, 2005 when they were going to court in a microbus.
The suicide bomb attack on the judges followed a series bomb blasts by JMB men across Bangladesh in 2005.
JMB, campaigning for the establishment of Islamic rule in Bangladesh, carried out a series of bombings in 63 of the country's 64 districts, including capital Dhaka on August 17, 2005, leaving two people dead and 150 others injured.
Hundreds of JMB leaders and activists were then rounded up while six top leaders of the group, including Shaikh Abdur Rahman, were hanged in 2007.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)