“Neo JMB”, as law enforcers call it, is an offshoot of the banned militant outfit Jama'atul Mujahideen Bangladesh (JMB).

The “Neo JMB”, formed by leaders and operatives of mainstream JMB who did not accept the leadership of Saidur Rahman, follows the ideology of Islamic State (IS).

“Neo JMB” coordinator Tamim Ahmed Chowdhury was killed along with his two accomplices in an operation at a militant den in Narayanganj on August 27, 2016. He was thought to be the Gulshan attack mastermind.

Apart from Gulshan attack, the gang ensured ingredients for improvised grenades that were used in all attacks perpetrated by “Neo JMB” in recent years, police said.