A 15-year-old boy Aitzaz Shah was arrested from the northwestern city of Dera Islamil Khan earlier this week, who had reportedly told the investigators that he was part of a back-up group who attacked Benazir Bhutto.

Caretaker Interior Minister Hamid Nawaz said that on the indication of suspect Aitzaz Shah, the authorities had taken into custody more suspects allegedly involved in the assassination of Benazir Bhutto. However, he did not disclose more details.

Hamid Nawaz said the Scotland Yard team investigated the assassination quickly and had got certain clues. He said some members of the team would return to Pakistan within the next few days.

The government had changed the strategy to quell militancy, Hamid Nawaz said, "Militants targeting the security forces will be crushed."

He also voiced the concern that the lives of prominent politicians were in danger. He said, "but we are taking tangible steps for their security."

Hamid Nawaz said that operation in the tribal region of Darra Adamkhel would continue till the militancy was wiped out from the area.

He said the general elections would be held as scheduled despite unsatisfactory law and order situation in the country. He said that elections would also be held in Swat valley, tribal regions and other disturbed areas.

Benazir Bhutto was killed in firing and suicide bombing attacks in the garrison city of Rawalpindi on Dec. 27 after addressing an election rally.