Some leads are there but too early to say which group is behind blast: PM.

Manmohan Singh taking to reporters on board Air India One. The PM said there are some leads to terror attack outside Delhi HC but "it is too early to say which group is behind the incident."ON BOARD AIR INDIA ONE: Prime MinisterManmohan Singh said there are some leads to the terror attack outside Delhi high court but "it is too early to say which group is behind the incident. "We have some leads