Government prosecutors have accused Pervez Musharraf of being involved in Benazir Bhutto's murder and not providing enough security to the former Pakistan prime minister.
He has denied the allegations.
Police officer Mohammed Ishaq said killed prosecutor Chaudhry Zulfikar was also involved in a case related to the 2008 terrorist attack on the Indian city of Mumbai that killed 166 people.
The attack was blamed on a Pakistan-based militant group.
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The family of the police officer who was murdered in the Westminster attack have thanked those who were with him 'in his last moments'.
Thousands of fans gathered for a public memorial honoring famous mother and daughter who died just a day apart.
More sunshine this Sunday as British Summer Time begins.