Islamabad, July 20 : The killers of former Prime Minister Benazir Bhutto will be exposed and punished soon, said Faisal Raza Abidi, the Political Secretary of President Asif Ali Zardari.

"An independent inquiry into Benazir Bhutto's assassination (by a United Nations Commission) has begun. People will know within days, not months, as to who killed her, and see them being brought to justice," Abidi told reporters here.

The UN inquiry commission probing the assassination of Benazir has completed its first round of investigations and left the country.

During its three-day stay in Pakistan, the commission met President Asif Ali Zardari, Foreign Minister Shah Mehmood Qureshi and Interior Advisor Rehman Malik.

The three-member commission also visited Liaquat Bagh in Rawalpindi, where Bhutto was killed in a gun and suicide attack in December 2007, The Daily Times reports.

According to sources, the commission had decided to appoint a permanent team of investigators in Pakistan to collect further information, which would be helpful in the probe.

Abidi also said that the PPP leadership had tasked him with appeasing dissenters.

"I'll make every effort to bring back (to the party folds) all those who had ever shouted the `Jiye Bhutto' slogan but are no more part of Pakistan People's Party," he said. (ANI)