Pakistani authorities said they didn't know whether their ambassador to Afghanistan had been kidnapped, a day after he went missing in a Pakistani tribal region plagued by bandits and militants.

Ambassador Tariq Azizuddin was on his way to Kabul from the northwestern Pakistani city of Peshawar when he disappeared along with his driver and bodyguard in the Khyber tribal region. "The search is on. We have nothing to share at the stage," Foreign Office spokesman, Muhammad Sadiq, told Reuters. He refused to speculate whether the envoy had been kidnapped.

"We don't know what happened, we have no idea," Sadiq said. "There is no confirmation he has been kidnapped."

A security official said the envoy was to change cars at the border but he did not show up and was believed to have not reached the border.

Afghanistan's President Hamid Karzai was sure the envoy had been snatched.

"The Pakistan ambassador to Afghanistan has been kidnapped while travelling to Afghanistan," Karzai said in Kabul, during a conference on education. "I hope he is safe and I hope he will be released soon."

The historic Khyber Pass is the main road link to landlocked Afghanistan in northwestern Pakistan. Khyber is notorious for smugglers and bandits, but unlike other parts of the tribal belt on the Afghan border it has been relatively free of the violence linked to al Qaeda and the Taliban, though militant activity has picked up in adjoining regions.

Scores of people were killed late last year in clashes between tribal militants loyal to two rival clerics in Khyber.

Four Pakistani workers of the International Committee of the Red Cross went missing in the same region earlier this month. They have not been found.

The security situation in Pakistan has deteriorated markedly since mid-2007, mainly in the northwest, with militants linked to the Taliban and al Qaeda carrying out a suicide bomb campaign against security forces and politicians campaigning for an election on February 18.

More than 400 people have been killed in militant related violence since the beginning of this year alone.

Sign up to our free newsletters

Get the best updates straight to your inbox:
Please select at least one mailing list.

You can unsubscribe at any time by clicking the link in the footer of our emails. We use Mailchimp as our marketing platform. By subscribing, you acknowledge that your information will be transferred to Mailchimp for processing.