Eyewitness confronts Karzai over Kandahar attacks
12 March 2012 Last updated at 13:11 GMT
A US soldier has launched a single-handed attack on Afghan villagers in Kandahar province, killing 16 people - nine of them children.
The first of these eyewitnesses lost several members of his family in the rampage, which happened in the early hours of Sunday.
He spoke to President Hamid Karzai on the phone after the attacks.