Washington DC, May 11 -- Pakistan's role as a mediator between the United States and Iran has come under scrutiny after CBS reported on Monday, citing US officials, that Pakistan quietly allowed Iranian military aircraft to park on its airfields, possibly shielding them from American airstrikes.

The two officials told CBS News that while Iran also sent civilian aircraft to be parked in Afghanistan, it was not clear if military aircraft were among those flights.

The US officials speaking on anonymity told CBS News that days after Trump had announced the ceasefire with Iran in early April, Tehran sent multiple aircraft to Pakistan's Nur Khan Air Base. Among the military hardware was an Iranian Air Force RC-130, a reconnaissance and intell...