The police had reached Batla House on a tip off that some suspected militants involved in the blasts were holed up in the building.
Of the five flat occupants, Atif Ameen and Mohd Sajid were killed during the encounter.
Highly-decorated Delhi Police Inspector Mohan Chand Sharma succumbed to the bullet injuries sustained during the gun battle while head constable Balwant was injured.
Apart from these two, one Ariz Khan alias Junaid had been declared a proclaimed offender while Mohd Saif was not made an accused in this case as according to the prosecution, he had surrendered peacefully and did not play any part in the entire incident.