relative of Afghan President Hamid Karzai has been mistakenly killed by Nato troops in southern Afghanistan

relative of Afghan President Hamid Karzai has been mistakenly killed by Nato troops in southern Afghanistan, officials say.

Yar Muhammad Khan was at his home in Dand district near Kandahar city when he was shot dead in an overnight raid.

Nato says it is investigating the incident.

Hundreds of Afghans took to the streets of the capital, Kabul, last week to protest about civilian deaths at the hands of foreign forces.

''There were operations taking place near his house. He was killed by mistake. He was not a target," Ahmad Wali Karzai, the brother of President Karzai and head of Kandahar's provincial council, said.

It comes just days after President Karzai lashed out at US-led forces over the recent accidental killing of nine boys by US forces in eastern Kunar province.