The last moments of Gaddafi's son?

Mu'tasim Billah Gaddafi, son of Moammar Gaddafi, is seen sitting leaning against a wall, smoking a cigarette allegedly minutes before his death in a video grab circulating on social networking sites.

One of the rebels allegedly asked him to speak Al Shahadah, which meant they were preparing him for his death.

The scenes raise questions of reports that he was not found dead, rather captured alive and then killed.

Media reports later show Mu'tasim's body riddled with bullet wounds.