Islamabad ,March 26: David C. Headley moved effortlessly between the US, Pakistan and India for nearly seven years, training at a militant camp in Pakistan on five occasions, according to a plea agreement released by the US justice department last week.

Headley not only helped plan 26/11, it says, but he was put in contact with an Al Qaeda cell in Europe that may still be operative. The document shows the cell, well supplied with weapons and money. was primed for an attack until Headley was arrested last October.

The revelations around the European cell were disturbing, said Mr Bruce Riedel, a member of the NSC in the Clinton administration and now at the Brookings Institution. They showed that "Al Qaeda still has a significant operational infrastructure somewhere in Europe," he said.

Jane Perlez