Following the encounter of three Khalistan Zindabad Force (KZF) terrorists in Pilibhit, security agencies are intensifying their search for their local helpers in the Terai region.
Two AK-47 rifles, two Glock pistols, and a huge cache of ammunition were seized from them, he said.
They were identified as Makhan Singh Gill alias Amli and Davinder Singh alias Happy, both residents of Noorpur Jattan village in Hoshiarpur, Punjab Director General of Police Dinkar Gupta said.
The arrest of suspected Babbar Khalsa International member Balwinder Singh by the Federal Bureau of Investigation in Nevada in the United States indicates that the terror group is in revival mode, says Vicky Nanjappa.
Lt Gen Kler said the systems and radars of the Indian armed forces are in place.
An Indian-American man has been arrested by the Federal Bureau of Investigation on charges of providing material support to Sikh separatist groups in India planning terrorist attacks.
The arrest of alleged Babbar Khalsa International operative Balwinder Singh by the Federal Bureau of Investigation will help India understand the international operations of this outfit better.
In the first such incident reported in Punjab, drones were used to drop weapons and communication devices, among others, from across the border, an official said, adding that a half-burnt drone used in the operation was recovered from Tarn Taran.
The duo were planning targeted killings in various north Indian states on the directions of Khalistan movement leaders sponsored by Pakistan's Inter-Services Intelligence, they said.
The damaged drone was recovered in Mahawa village based on the information given by one of the four people the state police arrested on Sunday.
BSF troops guarding over 180 km of IB with Pakistan have strengthened their observation posts and 'listening posts' to keep a close watch against any intrusion by drones.