Islamabad, July 21 - Former Pakistani president General Pervez Musharraf has rejected allegations of his involvement in the assassination of former prime minister Benazir Bhutto.

Addressing a ceremony in London, the former army chief said the allegations of not providing proper security to Bhutto were 'unsubstantiated', Geo TV reported.

'Getting UN body to probe Benazir Bhutto's murder is tantamount to no trust on national agencies,' he said, adding that the world body would come out with the same finding, as was unfolded by the Scotland Yard in their probe.

Bhutto, who had gone on self-imposed exile in Dubai in 1998 and returned in October 2007 to campaign for her party in parliamentary elections, was killed in a gun and bomb attack at a rally in Rawalpindi Dec 27, 2007.

Investigations carried out by then president Pervez Musharraf's government blamed Baitullah Mehsud, a Pakistani Taliban commander who operates in the lawless tribal areas of northwest region.

Britain's Scotland Yard which was called in to investigate Bhutto's death also said it its finding that the PPP leader was died of being hit by the sunroof of her car.