According to CNN’s report, she was bombed and shot:

Video of the scene just moments before the explosion showed Bhutto stepping into a heavily-guarded vehicle to leave the rally.

Khan said while it appeared Bhutto was shot, it was unclear if her bullet wounds were caused by a shooting or shrapnel from the bomb.

You don’t get bullet wounds from a bomb.

Shot and bombed, and this is a government teetering on the brink of anarchy with nuclear weapons.