Pakistan said Monday that it had no agreement with the United States for any agreement on joint operation on its soil.

"Pakistan has no understanding with the United States or any body else that there will be any joint operations inside Pakistan," Pakistani Foreign Office spokesperson Tasneem Aslam told reporters at her weekly briefing.

The spokesperson said that any action required to be taken inside the Pakistani territory would be taken by Pakistani armed forces.

To another question, Aslam said that tribes in the Waziristan tribal agency had undertaken that they would not allow any foreigner be they Uzbeks or Arabs to indulge in undesirable activities from the area.

Aslam said that Pakistan expected the international community to have trust in it without which the alliance against terrorism cannot achieve any success.

"Pakistan is pursuing war against terrorism in its national interest and as there is convergence of interests with the international community, it is also part of the coalition against terror," she said.

She said that there were four to six Pakistanis in the Guantanamo bay and the Pakistani interior ministry was in contact with the U.S. administration for their return to Pakistan.

The spokesperson said that the Pakistani embassy in Jordan was in touch with the Iraqi authorities to ascertain the number of Pakistanis killed in the Karbala bomb blast and repatriation of their bodies.

A car bomb exploded Saturday in a bus station in the Shiite holy city of Karbala, Iraq, killing at least 56 people, police and hospital officials said.