Hassan Shah was behind attacks on Christian priest, Sikh herbalist

There was no loss of life in the incident

The large number of visitors caused a traffic jam on the road leading to the zoo

A school in Peshawar had been a long-standing demand of the Sikhs from the province and the tribal areas

CTD sources said the dead terrorists were also involved in an attack on a police station

Attacker had walked to the target from Kohati Gate

Muntazir had come from Chakwal with his uncle

Attacks on police have registered a sudden increase since the fall of Kabul to Taliban last year in August

Incident took place three days ago but accused managed to escape from scene

Police say raid was carried out on a house to arrest a PO