A Taliban suicide car bomber has killed at least nine people and wounded 10 others in an attack at Jalalabad airport in eastern Afghanistan.
The insurgents said the bombing was in revenge for a Koran-burning incident at a US air base in Bagram near Kabul a week ago.
The burning, which the US says was unintentional, has sparked violent protests across the country and more than 30 people have been killed during six days of unrest, the BBC reports.
NATO said it had no reports of international forces being among the casualties in Jalalabad.
The airport serves civilian and international military aircraft. Witnesses reported seeing at least four destroyed cars at the gates.
Taliban spokesman Zabiullah Mujahid said in an email to media: "This attack is revenge against those soldiers who burned our Koran.''
Meanwhile, several US troops are reported to have been injured in a grenade attack, hours after Afghan President Hamid Karzai went on national television to appeal for calm.
A grenade was thrown into a NATO base in northern Kunduz province during a protest on Sunday.
NATO said none of its people had been killed, though several NATO personnel were injured and reports quoting Afghan officials put the casualties at a total of seven.
Afghan authorities are hunting for the killer of two NATO military advisers, shot dead at the Interior Ministry in Kabul on Saturday.
Afghan officials earlier named one of the ministry's employees, police intelligence officer Abdul Saboor from Parwan province, as the main suspect.
