In the operation, the police arrested six people, including four automobile thieves and two receivers.
A Delhi Court on Monday sentenced Indian Mujahideen (IM) terrorists Ariz Khan to death.
Ariz Khan was convicted of the murder of inspector Mohan Chand Sharma and other offences.
The verdict has been announced 13 years after the Batla House encounter took place in September 2008.
Additional Sessions Judge Sandeep Yadav called it a ‘rarest of rare case’ while awarding the death penalty.
The prosecution had sought the death penalty for Khan in the case while the counsel for the convict sought leniency on the ground of his young age.
On March 8, the court had convicted Khan in the case, noting that he murdered encounter specialist and inspector Mohan Chand Sharma.
The Additional Sessions Judge had said that Khan, along with his associates, intentionally and voluntarily caused the murder of Sharma by the use of gunshot.
Ariz Khan was convicted under Sections 186 (obstructing public servant in discharge of public functions), 333 (voluntarily causes grievous hurt), 353 (Assault or criminal force to deter public servant) and 302 (murder) of the Indian Penal Code.
He has also been held guilty under Sections 307 (attempt to murder), 174(a) (non-appearance in response to a proclamation) and 34 (criminal intention) of the IPC and Section 27 (using any prohibited weapons) of the Arms Act.
On September 19 in 2008, the Special Cell of Delhi Police had carried out an encounter at the Batla House in Jamia Nagar, in which two suspected Indian Mujahideen terrorists and inspector Sharma were killed.
Ariz Khan had fled from the spot and was declared a proclaimed offender. He was arrested on February 14, 2018.
Ariz Khan is allegedly associated with the terror outfit Indian Mujahideen. The police claimed that he was present at the Batla House during the encounter and had managed to give the police a slip.
In July 2013, a trial court had sentenced Indian Mujahideen terrorist Shahzad Ahmed to life imprisonment in connection with the case.
Of the five men residing in the apartment at Batla House, Mohammed Sajid and Atif Amin were killed during the encounter, Junaid and Shahzad Ahmad fled and were caught years later, while Mohammad Saif surrendered to the police.
The suspected IM operatives were said to have been involved in the serial bomb blasts that took place in Delhi six days before the encounter.
On the last date of hearing, the judge had issued a production warrant against Ariz Khan alias Junaid for his presence during the pronouncement of judgment.
(With IANS inputs)