This is the minimum he would expect from Islamabad in the aftermath of the Mumbai terrorist attacks, Senator Joseph I Lieberman, Chairman of the Senate Committee on Homeland Security and Governmental Affairs told reporters.

"They (Pakistani authorities) know where they (terrorists) are. We know where they are. Sometimes, it is... people come in the camps... these are not military bases. They are quite temporary and can move out quickly. But we have to keep them on the run. And some of them are more than temporary," Senator Lieberman, who held a hearing on Mumbai terrorist attacks earlier in the day, said.

In this case, the minimum the Pakistani Government can possibly do bring anyone associated with the Mumbai terrorists attack to justice. "They should be prosecuted in the court of law," the Senator asserted.

Lieberman was in India and Pakistan soon after the Mumbai terror attacks and met leaders of both the countries including the Prime Minister, Manmohan Singh.

"It is very important that the Pakistani Government take actions so that no one can ever have any basis for charging or concluding that anyone in the Pakistan intelligence service has had contacts with terrorists," he said, adding "this is just unacceptable."