The doctor who treated Benazir Bhutto talks about her condition when she arrived at the hospital. ISLAMABAD, Pakistan (CNN) -- Benazir Bhutto died as a result of a fractured skull after hitting her head on part of her car's sun roof, not as a result of a bullet or bomb shrapnel, a spokesman for Pakistan's Interior Ministry said Friday. Asif Ali Zardari, in white cap on left, helps carry the coffin of his wife Benazir Bhutto during Friday's burial. 1 of 6 more photos Nothing entered the opposition leader's head, said spokesman Brigadier Javed Iqbal Cheema. At a news conference, Cheema showed images of Bhutto in a car, standing up through an open sunroof, looking out at the crowd as she was about to be driven away. When the gunshots rang out and the explosion occurred, Bhutto "fell down or perhaps ducked" and apparently hit her head on a lever, Cheema said, adding that the lever was stained with blood. Watch how investigators think Bhutto died Earlier, the ministry...