'We did not want to take any risks so our men moved in and arrested them. We also sent another police party to the Sarai Kale Khan bus terminal, but no one was present there,' Aggarwal said.

The police said both terrorists had been brought together by Shahid and they did not know each other before that.

'Shahid gave them fake passports, visas and identity cards. The two then flew by Pakistan Airlines to Nepal July 29. Then both men crossed the India-Nepal border on foot Aug 3 and reached Gorakhpur (Uttar Pradesh),' he said.

'From Gorakhpur they reached Jammu and Kashmir and met one Fayaz, who gave them weapons and ammunitions and a car before sending them off to Delhi,' he added.

The police said Ahmad was approached in 1997 by some people and was motivated to join the Hizbul Mujahideen. He joined the outfit and received religious training in the jungles before going to Pakistan for further weapons and religious training. 'Ahmad was trained in vehicle driving and he started driving vehicles in the training camp,' said the police officer.

'Bhat was approached in 2003 by some to join the jehad (holy war). He received training in weapons and religious indoctrination in Muzaffarabad (Pakistani Kashmir). He stayed in Pakistan, where he got in touch with the self-styled chief of the Hizbul Mujahideen Syed Salahuddin,' Aggarwal added.

The police said that interrogation of the two arrested men was going on.