Police in Pakistan say the lead prosecutor investigating the murder of former prime minister Benazir Bhutto, and the 2008 bombing attacks in Mumbai, India, has been shot dead in Islamabad.
Chaudry Zulfikar was shot multiple times Friday by attackers on a motorbike. His bodyguard was wounded and a passer-by was killed when his car hit her. Zulfikar's attackers fled.
Police also said a candidate for the national assembly was shot and killed in Karachi, as violence spikes ahead of May 11 elections.
Zulfikar was investigating the December 2007 killing of Ms. Bhutto, which took place in Rawalpindi just weeks after she returned to the country from self-imposed exile. No one has been convicted or sent to prison for her death. Police said he was headed to a hearing related to the Bhutto attack when he was killed.
Former military ruler Pervez Musharraf is accused in the Bhutto case.
Zulfikar was also investigating the Mumbai attacks, in which 166 people were killed. India blames the radical Pakistani Islamic group Lashkar-e-Taiba for the attacks.
Anti-terrorism authorities are probing claims that the then-president Musharraf failed to provide adequate security in 2007 to Ms. Bhutto, his political rival, who was gunned down at a political rally.
Mr. Musharraf has denied any involvement and he says the allegations against him are politically motivated.