British detectives from Scotland Yard have concluded that the force of a suicide bomb blast, and not an assassin's bullet, killed Pakistani opposition leader and former Prime Minister Benazir Bhutto.
Investigators presented the findings Friday of their probe into the December 27 assassination of Ms. Bhutto as she left a political rally in Rawalpindi.
They determined that Ms. Bhutto died from a fatal head injury caused by the suicide blast, triggered by a lone assailants. There were earlier suggestions that two assailants were involved.
The British investigators spent more than two weeks in Pakistan at the request of President Pervez Musharraf. Their findings supported the Pakistani government's version of how Ms. Bhutto died.
A spokeswoman, Sherry Rahman, for Ms. Bhutto's Pakistan People's Party rejected the British findings and insisted that she died from a bullet wound.
The British report noted that despite the lack of an extended and detailed search of the crime scene or autopsy of Ms. Bhutto's body, "the evidence that is available is sufficient for reliable conclusions to be drawn."
Ms. Bhutto's family and members of her party blame the government for her death, in part due to what they say was a lack of adequate security for during her political campaign.
Pakistani and U.S. officials say the popular opposition leader was killed by fighters allied with tribal leader Baitullah Mehsud, with support from al-Qaida.
A spokesman for the militant leader says the group was not involved in Ms. Bhutto's death.
Pakistani police said Thursday they have detained and are interrogating two more suspects in connection with Ms. Bhutto's murder. Security officials say the two men, identified only as Hasnain and Rafaqat, are being held in Rawalpindi.
Some information for this report was provided by AFP, AP and Reuters.