A prosecutor investigating the 2007 assassination of former Pakistani Prime Minister Benazir Bhutto, one of the most shocking events in Pakistan's turbulent history, was shot dead on Friday (May 3), police said.

Gunmen on a motorcycle shot 12 bullets into Chaudhry Zulfikar as he left his home in Islamabad, the sources said.

Jameel Hashmi, a senior police official investigating the incident, said Zulfikar was driving the car himself, and a woman pedestrian was crushed to death by his car as it hit the curb after he was shot.

Bhutto's assassination is shrouded in mystery. She was killed in a gun and suicide bomb attack after an election rally in the city of Rawalpindi, weeks after she returned to Pakistan from years in self-imposed exile.

A report by a U.N. commission of inquiry released in 2010 said any credible investigation should not rule out the possibility that members of Pakistan's military and security establishment were involved.

The killing of the prosecutor comes days after a Pakistani court put former president Pervez Musharraf on a 14-day judicial remand for charges of failing to provide adequate security for Bhutto before her assassination.

Bhutto was a fierce critic of Pakistan's Taliban and Islamist groups that had been patronised by elements of Pakistan's military.

She was deeply mistrusted by the security establishment.

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