Trying to sort out the Bhutto murder

Any attempt to sort out the Bhutto murder has got to start with the evidence.

Here is a photo of a gunman who shot at Bhutto.
Here is a video of the assassination.
Here is a video of the Musharraf government's treatment of the evidence at the scene.

Musharraf's government claims that Bhutto was killed by the suicide bomb, and that Al Qaeda was responsible.

According to news reports, Bhutto's people who were in with the car with her say she died from gunshots.

The head of Pakistan's internal security service claimed that his service had given the public the "absolute facts", as backed up by the "evidence we collected." However, it is difficult to reconcile this claim about the collection of evidence at the scene with the above video of a fire truck washing away such evidence, as well as news reports stating that no autopsy was done. Additionally, the claim that the Musharraf government has given the public "absolute facts" about the murder is difficult to credit, since the Government has given at least three different accounts of the cause of her death.

According to this Daily Telegraph article,

The footage clearly shows Ms Bhutto collapsing into her armoured-vehicle before the suicide blast, contradicting official government claims that she ducked to avoid the shots and cracked her skull on the sunroof.

I can't personally see that in the video, but I can see no reason why the Daily Telegraph would lie, so I am inclined to accept that the Daily Telegraph's statement is correct. Additionally, it is backed up by the accounts of Bhutto's friends that she was killed by gunfire.

This was not the first attempt on Bhutto's life. She blamed Al Qaeda and the Taliban for the previous attempt last October.

Now, in light of this evidence, let's look at some hypotheses.

1) Musharraf ordered her murder.
Seems difficult to credit. First of all, why would he invite her back to the country, only to kill her? Surely he realized that such a course of action would lead to an explosion of violenced aimed at his government, similar to the one Pakistan is suffering right now. No matter what problems Bhutto created for Musharraf while alive, her death causes much worse problems for her.

2) Al Qaeda ordered her murder.
Seems highly plausible. As Engram over at Back Talk points out, Al Qaeda has frequently used suicide bombs in the past. Additionally, if they tried to kill her in October, it makes sense that they tried again in December.

Furthermore, following the links from Engram's post, you can see that Al Qaeda has declared war on Musharraf. So Al Qaeda wants to cause problems for Musharraf, and Bhutto's murder has done exactly that.

However, the fly in the ointment with this explanation is the Musharraf government attemtps to hide the truth. If they want the public to know the facts, why are they having a fire truck wash away evidence, denying doctors' request for an autopsy, and giving multiple, inconsistent explanations of what happened?

3) Al Qaeda ordered her murder, and elements in Musharraf's security services helped.

Also plausible. This would not be the first time Al Qaeda has infiltrated another organization. And Bhutto has promised that if she came to power, she would get rid of some elements of the security services; those elements would natural have taken exception to this.

At this point, I don't know which explanation I believe, except that I'm sure it's not number 1. It is possible that the Musharraf Government's bungling is just sheer stupidity. It is also possible that it is something more sinister.