Chinook helicopter are widely used across Afghanistan At least one person has been killed and seven wounded in an explosion on board a Nato helicopter in eastern Afghanistan, coalition officials say.
They say that the Chinook helicopter was in the process of landing when the explosion happened, and that its cause was not immediately clear.
There were about 26 Nato-led International Security Assistance Force (Isaf) troops on board at the time.
Nato has not said where exactly the blast took place.
But it has said that the landing site has now been secured by troops.
Isaf initially said that two people had been killed in the blast, but a spokesman later scaled down the casualty figure.
“Operational reporting is very fluid. You’ve got to understand that we’re trying to get all the facts,” an Isaf spokesman told the AFP news agency.
“There are seven wounded and one killed in action. It is up to respective governments to release details of those killed in action. The seven wounded are Isaf personnel,” the spokesman said.
Eastern Afghanistan is one of the most dangerous parts of the country, where Taliban and other Islamist insurgents have a strong presence.
It is just across the border from Pakistan, where militant groups are also strong on the ground.
There are currently about 152,000 foreign troops under US and Nato command in Afghanistan, fighting in a bid to reverse a nine-year Taliban insurgency.
Two-thirds of the troops are Americans.
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