Two civilians, including a teenage boy, were killed when security forces fired at hundreds of villagers who marched to the site of the shootout to help the militants escape, he added.
In a statement issued here Saturday Jama'at said that the forces personnel have been given "license to kill Kashmiri youth at random and destroy their properties so as to devastate them economically too".
Meanwhile, bodies of dreaded Lashkar-e-Taiba militant Junaid Ahmad Mattoo and two others were recovered from the encounter site in Arwani village of South Kashmir. They attacked the vehicle carrying the six police officials in Thajiwara Achabla in Anantnag.
"There are no reports of any casualty", a police source said.
Police said the civilians were killed in the crossfire between militants and the government forces.
After a search operation that lasted the night, three bodies of Lashkar-e-Toiba militants Junaid Mattoo, Nasir Wani and Adil Mushtaq were recovered from the debris of houses where the encounter took place.
The unrest spread to neighbouring villages as thousands of residents clashed with government forces, hurling stones and chanting: "We want freedom" and "Go India, go back".
APHC Chairman Mirwaiz Umar Farooq, who was once again placed under house detention also paid tributes to the slain militants and civilians. Militants also appeared in the funerals of two militants and fired some rounds in air.
A police official said restrictions were imposed in areas falling under six police stations in Srinagar and parts of Kulgam, Pulwama, Shopian and Anantnag districts to maintain law and order and foil protests.
Defence Minister Arun Jaitley said Saturday that the killing of six policemen in a militant ambush in Kashmir was an act of "cowardice". Police said crowd threw stones and tried to break the security cordon.
All shops and other business establishments remained closed in the town while public transport is off the roads.