Geelani, chairman of hard-line Hurriyat Conference, also tried to defy the house arrest and lead a march towards the UNMOG.
Authorities clamped strict restrictions in Srinagar and north Kashmir's Sopore town to foil a separatist march on Friday.
The DGP said Jatt's killing, along with one of his associates, was a big success for the security forces.
Protests broke out in several areas in Jammu on Thursday against raising of Pakistani flags and pro-Pakistan slogans at the rally held by separatist leaders in Srinagar on Wednesday.
Curfew remained in force in the five districts of Anantnag, Kulgam, Pulwama, Shopian and Baramulla.
The attack by the LeT to free "hardcore" Lashkar-e-Tayiba terrorist Mohammed Naveed Jhatt took place around 11.35 am inside the busy SMHS hospital complex in a high security area of Jammu and Kashmir's summer capital.
A day after the militant strike in Srinagar left eight soldiers dead, Prime Minister Manmohan Singh on Tuesday said the entire country is standing united against terrorists and they will not succeed in their designs.
Here is a timeline of the major attacks that have taken place in Jammu and Kashmir since 1999 till date
Curfew remained in force in entire Srinagar district and Anantnag town on Saturday to thwart the separatists' plan to stage a two-day sit-in in the city centre even as the death toll in the ongoing unrest climbed to 56 in the Valley with the death of a youth injured in firing.
After the deluge, the fear of epidemic is lurking in the minds of doctors here who are facing an "acute" shortage of medicines.
Top Lashkar-e-Tayiba commander Abu Qasim was gunned down on Thursday in Kashmir.
Qasim, a Lashkar leader and terrorist, had planned the attack on a Border Security Force convoy in Udhampur on August 5.
CRPF DG K Durga Prasad said the terrorists were clean shaven and that "shows" that they were fidayeen attackers.
Mukhtar Ahmad walks down the flood ravaged streets of Srinagar and finds that it will be a lack-luster Eid for hundreds of families
More and more patients with symptoms of skin irritation, chest infection and diarrhoea are thronging health centres in flood-ravaged Srinagar, with doctors saying they are already dealing with an epidemic outbreak.
Under attack over pro-Pakistan slogans and flags being waved at a rally by hardliner Syed Ali Shah Geelani, Jammu and Kashmir Chief Minister Mufti Mohammed Sayeed on Thursday said it was "not acceptable" and "will not be tolerated'.
Bharatiya Janata Party leader Yashwant Sinha on Tuesday created ripples as he led a five-member delegation of civil society members to meet separatist leaders Syed Ali Shah Geelani and Mirwaiz Umar Farooq in a bid to break the three-month impasse in Kashmir triggered by the killing of Hizbul Mujahideen militant Burhan Wani.
In a boost to relief efforts in the flood-ravaged Kashmir Valley, the Jammu-Sringar National Highway on Tuesday reopened for traffic after remaining closed for 13 days due to landslides triggered by incessant rains.
Normal life has been paralysed due to curfew-like restrictions and separatists-sponsored strike since Saturday.