Nato’s US-led International Security Assistance Force (ISAF) did not provide the detail of casualties took place during the attack on Nato troops on Tuesday and the nationalities of dead troops.
A total of 711 foreign troops were killed in Afghanistan last year, the highest annual total since the US-led invasion in 2001 ousted the Taliban from power.
There are about 130,000 international troops in Afghanistan fighting the Taliban-led insurgency, with 91,000 of them from the United States.
East Afghanistan is one of the deadliest flashpoints in the 10-year war against Taliban insurgents and is considered the hub of terrorists’ base camps. It shares porous border with Pakistan.
Nato has started to withdraw its troops from worn-torn Afghanistan and the withdrawal will be completed by the end of 2014.