Pulitzer Prize-winning Indian photojournalist Danish Siddiqui has been killed in Afghanistan, said the country's ambassador in Delhi.

Siddiqui, the chief photographer of Reuters in India, was on assignment in Afghanistan when he died.

He was embedded with a convoy of Afghan forces that was ambushed by Taliban militants near a key border post with Pakistan, according to reports.

There was no immediate reaction from the Indian government.

Its unclear how many others died in the attack.

Afghanistan's ambassador to India, Farid Mamundzay, said he was deeply disturbed by the news of "the killing of a friend".