Atif alias Bashar, who was killed in Friday's daylight encounter in South Delhi, was the ‘main man’ from Indian Mujahideen and seems to have been inspired by global terror organisation al-Qaeda and Osama Bin Laden, Joint Commissioner (Special Cell) of Delhi Police Karnal Singh said.

"LeT was providing total support to SIMI and Indian Mujahideen," Singh said.

Police seized laptop of Atif which contained material about al-Qaeda and Osama bin Laden. Asked whether Atif was in touch with the al-Qaeda, Singh said that nothing could be said at this stage.

He said with the arrest of Saif from Jamia Nagar in South Delhi during Friday's shootout and Zeeshan later in the night from Jhandewalan of Central Delhi, the serial blasts case in Uttar Pradesh courts in 2007 had been cracked.

Singh said Saif had planted the bomb in Varanasi courts along with one Sajjad, suspected to be the main bomb maker of Indian Mujahideen, in November 2007 that left over a dozen people dead.