The commander of U.S. forces in the Middle East and Southwest Asia arrived in Pakistan on Sunday for a three-day visit.
A Pakistani statement says General John Abizaid, head of US Central Command, will hold talks with senior military officials on matters of mutual interest.
The general arrived from Afghanistan, where U.S. and coalition forces are hunting militants from the ousted Taleban regime and al-Qaida fugitives.
Visiting the U.S. base at Bagram north of Kabul Saturday, General Abizaid said it is clear that Taleban insurgents are using Pakistan to infiltrate Afghanistan. But he rejected any suggestion that Pakistani authorities are colluding with the rebels.
The governments of Afghanistan and Pakistan have long accused each other of not doing enough to quell the Taleban insurgency.