This has been corroborated by Lashkar-e-Taiba member Abdul Karim Tunda, who is now in Delhi Police custody, intelligence sources told IANS.
Tunda has also told Indian interrogators that the Pakistani intelligence has provided shelter to small and big terrorist groups to execute bombings in India.
Delhi's Special Commissioner of Police S.N. Srivastava told IANS: "Wadhawa Singh, Ratandeep Singh and Mehal Singh are the most wanted Sikh extremists."
Tunda confessed that he had been assigned by Ratandeep Singh to carry out bomb attacks in India.
Tunda also said that the Babbar Khalsa International had demanded explosives before the Commonwealth Games in Delhi in 2010 -- and he sent the consignment.
Intelligence sources say that the Sikh militants in Pakistan are in touch with "extremist minded" pro-Khalistan expatriates based in the West, particularly in Canada. The pro-Khalistan expatriates are known to fund the extremists -- also with the mission of reviving militancy in Punjab.
Over the last four years, Punjab Police has busted over a dozen modules of terrorist groups trying to revive terrorism in the state. Some suspects have been arrested and weapons and ammunition sezied from them.
The attempts to revive terrorism has not found many takers in Punjab.
