Authorities on Wednesday temporarily closed Peshawar airport, an aviation official said, citing "technical reasons" for the shutdown in the northwest Pakistani city troubled by Taliban attacks.
The capital of the North West Frontier Province has recently been hit by a wave of deadly attacks, blamed on Taliban militants seeking to avenge a military offensive against them in three northwest districts.
"Peshawar airport is temporarily closed due to some technical reasons," said Pervez George, a spokesman for Pakistan's civil aviation authority.
He did not expand on the reasons for the shutdown on Wednesday afternoon, but a security official at the international airport said they had received reports that the building might be targeted by militants.
"Our intelligence informed us...about a possible attack by militants," said the official who refused to be named as he was not authorised to speak to the media on the matter.
"We are taking some extra security measures and then we will decide about re-opening the airport," he added.
Situated in the heart of the city, Peshawar International Airport is located approximately 180 kilometres (110 miles) from Islamabad.
Another official at the airport inquiry desk said that all flights were being diverted to the capital.