( dpa ) - Investigators from Britain's Scotland Yard arrived Friday in Islamabad to assist Pakistani authorities in investigating the assassination of opposition leader Benazir Bhutto. A five-member team from London's Metropolitan Police Service Counterterrorism Command were dispatched after a request from Pakistani President Pervez Musharraf to British Prime Minister Gordon Brown. Aidan Liddle, a spokesman for the British High Commission in Islamabad, said the team consisted of forensics specialists who would only be assisting the Pakistanis and not conducting their own investigation. Officials from Bhutto's Pakistan People's Party have denounced Musharraf's move to bring in Scotland Yard and have demanded an independent investigation by the United Nations. It remained to be seen how much light the British team would be able to cast onto the gun-suicide bombing attack that killed former prime minister Bhutto, 54, as she left a campaign rally on December 27 in the city of Rawalpindi. Local city workers washed the crime scene clean with fire hoses shortly after the attack, potentially destroying vital forensicevidence. Musharraf, speaking to foreign journalists Thursday night, acknowledged that the workers should not have touched the crime scene and said he hoped Scotland Yard's presence would help dispel a widespread belief that elements within his government killed Bhutto and then destroyed the evidence.