Via Agonist, we find this link to a Pakistani blog with on the scene updates ongoing.  The latest reports say that violence is substantial in a number of areas around the country, with fires being set and looting following that.  This blog reports a couple of suspects in the assassination:

1- Baitullah Mehsud, a top commander fighting the Pakistani army in the tribal region of South Waziristan. He has close ties to al Qaeda and the Afghan Taleban.

2- The other was Haji Omar, the "amir" or leader of the Pakistani Taleban, who is also from South Waziristan and fought against the Soviets with the Mujahideen in Afghanistan.

It is important to stress that it is VERY early in the process to fix any speculation on any one possibility, but these are two names that I’ve heard floated elsewhere as well, and I thought raising them to see if others had thoughts or opinions on them would be useful.  My first thought on this was that the intel services in Pakistan should be high on any speculation list, given their prior ties to extremist, militant Islamic and Taliban-linked groups in Pakistan, but again it’s awfully early to come up with any one theory.    Thoughts?

Further, reader noen points to other Pakistani metro blogs here as well.

Spencer Ackerman has two good pieces at TPM, with a source close to Bhutto implicating Musharraf as having responsibility for Bhutto’s death – see here — and reporting on the runaround from the State Department here.   Americablog has a link to a Sky news report discussing the fears that this will lead to a descent into chaos and civil war within Pakistan.  BBC has some more details on the attack, as well as an obituary

For some perspective, it is worth a re-read of this op-ed from Mrs. Bhutto from November in the NYTimes.  Juan Cole has some thoughts here, and Informed Comment: Global Affairs has a number of updates as well.  More as we get it…post links and updates as you find them in the comments, please.

UPDATE:  Interesting article from last summer in Foreign Affairs from a former State Department official during the Bush Administration.  More from Daniel Markey here at Council on Foreign Relations.  Anyone know much about him?