Unidentified gunmen shot and killed two German journalists travelling in northern Afghanistan today.
Afghan police said the two, a man and woman, were working on a documentary.
The two were travelling from Baghlan province to the central province of Bamiyan, the officials said.
Earlier, insurgents attacked a Nato patrol, killing a soldier in a southern district that the alliance said had been cleared of Taliban fighters after a two-week offensive last month.
Nato did not release the nationality of the soldier killed in a bomb and small-arms attack on the in Panjwai district, about 15 miles west of the city of Kandahar.
Violence has surged in Afghanistan this year to its most intense level since US-led forces ousted the hardline Taliban government in late 2001, weeks after the September 11 attacks.
Today is the fifth anniversary of the beginning of the offensive that swept the Taliban from power.