Senior Bharatiya Janata Party leader Lal Kishenchand Advani accused the central government of complete failure in tackling terrorism and sought zero tolerance towards the scourge.

"The bomb blast in the train from Delhi to Attari shows terrorists are still operating and are in command. The UPA government's approach lacks a concerted policy to tackle terrorists," he told PTI over phone from Pantnagar in Uttarakhand.

The BJP leader also referred to National Security Adviser M K Narayanan's recent comments in Munich about manipulation of stock markets by terror groups to generate funds, calling them a matter of serious concern.

He flayed the UPA for scrapping POTA and accused it of attempts to save Parliament attack convict Mohammad Afzal from execution.

"The BJP feels that the UPA government should adopt zero tolerance policy against terrorism," he remarked.