BBC News with Iain Purdon

New mobile phone video has emerged from Libya of the moments leading up to the death of Muammar Gaddafi. The United Nations high commissioner for human rights has said there should be a full investigation into how Colonel Gaddafi was killed. Gabriel Gatehouse reports from Misrata.

Today new footage emerged of Colonel Gaddafi's final moments. He's seen being led away on foot by rebel fighters who quickly surround him. Guns are pointed at his head, and voices can be heard arguing over whether to kill him. This footage appears to have been filmed later. He's still alive, and he's been lifted onto a truck. Some time after that, he's filmed lying on the ground where he appears lifeless. Several hours later, he was pronounced dead. No one knows who fired the shot that killed him.