Islamabad, Pakistan ? Osama bin Laden or his chief lieutenants won’t be able to evade arrest indefinitely if they have sought refuge secretly in Pakistan, the Foreign Ministry said Monday.

Sen. Bob Graham, Democrat-Florida, chairman of the Senate Intelligence Committee, told “Fox News Sunday” that bin Laden may be hiding in Pakistan’s western tribal lands along the Afghan border.

“There are several reports about Osama being here or there,” Foreign Ministry spokesman Aziz Ahmed Khan told reporters. “The point is that we have a very close cooperation with the United States and the coalition on such issues or on al-Qaida.”

Khan said that if there is reliable information on the precise whereabouts of bin Laden or other senior al-Qaida figures, “they will be nabbed immediately.”

He added that Pakistan “has an excellent record of capturing” al-Qaida fugitives.

Pakistani officials say more than 300 people have been picked up after sneaking across the border to escape U.S. military operations in Afghanistan. The highest profile figure was Abu Zubaydah, bin Laden’s chief lieutenant who was arrested in March at a hide-out in Faisalabad.

The tribal areas of western Pakistan are a rugged, mountainous area which is under the control of local leaders rather than the central government in Islamabad.

However, Pakistan’s army has deployed in the area with the consent of tribal leaders.

“I am sure anybody trying to cross into Pakistan will be apprehended and won’t be able to hide,” Khan said.