According to sources, this was revealed during investigations into the alleged plans of Sikh militant group Babbar Khalsa International men to plant a bomb in New Delhi and Himachal Pradesh.
Sources said the men were being provided directions by Pakistan-based Wadhwa Singh and Parminder Singh, who figure in dossier of wanted terrorists passed to Pakistan recently.
"The men have been provided cover for so long. There are no free lunches in the world. They have to show their worth to enjoy the shelter of the ISI," a source said.
Sources further said that attempts are being made by certain men to re-group and launch attacks on country's stability.
"With Commonwealth Games scheduled later this year, the terror groups being provided all help by ISI are under more pressure to launch attacks but are jittery over busting of various modules by police across the country," sources added.