[2] Bombs exploded and gunfire was reported when the military launched Operation Twilight to clear the militant hideout.

[10] Operation Twilight was launched by the 1st Para Commando Battalion of the Bangladesh Army under the command of Major General Anwarul Momen, GOC 17th Infantry Division in Jalalabad Cantonment.

[12] The militants had planted improvised explosive devices (IEDs) all over the building which slowed down the operation.

[13] The main gate of the building was blocked by a refrigerator with an IED booby trap attached to it.

[14] Army spokesman, Brigadier General Fakhrul Ahsan, initially reported that the operation would take more time because of the presence of scattered IEDs in strategic points inside the building.

The second was left in a bag containing vegetables and exploded at 7.55, after police and RAB personnel moved into the area following the first explosion.

[21][20][22][23] Lieutenant Colonel Abul Kalam Azad, director of intelligence of RAB, was seriously injured in the second explosion.