From the New York Times:
The first images of Colonel Gaddafi in captivity (embedded at the top of this post) appear to have been taken by Ali Algadi, a rebel fighter with an iPhone. Mr. Algadi told the American news site GlobalPost, which obtained and published his video, that he began recording just seconds after the former Libyan leader was dragged from a drainage pipe beneath a road near the city of Surt on Thursday.
While the scene is chaotic, and the iPhone footage is shaky, it is clear that Colonel Gaddafi was still alive when he was captured and able to stand, although he was clearly dazed and the left side of his face was splattered with blood. The video also shows that several of the men who took custody of the deposed leader were dressed in camouflage shirts or pants, and at least one man in the background seems to have been wearing what looks like a bulletproof vest.