Taliban militants have attacked a US base in eastern Afghanistan, sparking a lengthy gun battle in which three insurgents were killed.
Reports say the attack on Torkham base in Nangarhar province unfolded after militants torched Nato supply trucks on the highway leading to the base.
Officials said that no Afghan or US soldiers died in the raid. The attackers did not enter the base.
But officials say the financial cost of the attack is likely to be immense.
Many Nato supply vehicles on the road to the base were left badly burned on the highway. Officials closed the Jalalabad-Torkham road – a key route for these vehicles – after the attack.
A Taliban spokesman told the BBC that the group was behind the raid.