A team of police officers from Britain’s Scotland Yard has visited the area where Pakistani opposition leader Benazir Bhutto was killed.
It is unclear what they will be able to learn as the street in Rawalpindi was hosed down just hours after the attack.
Bhutto’s husband, Asif Ali Zardari, has accused what he called “elements within Pakistan’s government” of responsibility for her assassination and has urged Britain and the US to support a UN investigation.
There is controversy over exactly how Bhutto died.
Her party said she was shot from a few metres away – an account seemingly supported by video footage.
An initial government report claimed she hit her head on a lever on the edge of her sunroof when a bomb exploded nearby.
A further 20 people died in the suicide explosion and many more were injured.
President Pervez Musharraf said he is not “fully satisfied” with the investigation but said he did not believe intelligence or government agencies had tried to hide anything.