The Delhi Police's Special Cell on Wednesday arrested Indian Mujahideen (IM) member Ariz Khan alias Junaid from Delhi.
The 32-year-old engineering graduate was on the run since the September 2008 Batla House encounter, where two IM members were gunned down and two nabbed by the police.
Khan, who had a reward of ₹15 lakh on his head, as announced by the National Investigation Agency, had plans to revive the IM.
He was present at the Batla House building during the encounter, said a special cell officer.