Oct. 20 (Bloomberg) -- Pakistan's police gathered evidence today from the site of a bombing attack against former Prime Minister Benazir Bhutto that killed at least 136 people.

``We have pieces of evidence,'' Karachi Police Chief Azhar Farooqi said in a telephone interview. ``We'll send it to a forensic laboratory and will find some direction in a few days.'' He didn't provide further details.

Bhutto survived the assassination bid on Oct. 18 after a suicide bomber struck near her vehicle during a homecoming parade. No group has taken responsibility for the attack, the deadliest since President Pervez Musharraf took power in 1999.

Farooqi declined to comment on an Agence France-Presse report today that the police are investigating a list of possible suspects that was provided by Bhutto.

``I am not in a position to comment on that,'' he said.

Bhutto, who has lived mostly in Dubai and London since 1999, flew back to Pakistan after Musharraf agreed to drop corruption cases against her. The opposition leader held the post of prime minister twice between 1988 and 1996.

Bhutto, unhurt in the explosions, said yesterday the attack won't stop her from competing in elections that are due by Jan. 15. The Pakistani government also vowed the elections would be held as scheduled.

``The elections will go ahead as planned and we will ensure the road to democracy isn't disrupted,'' Deputy Information Minister Tariq Azeem said yesterday in a telephone interview from the capital, Islamabad. ``If terrorists think they can derail the election process, they are wrong,'' he added.

Separately, at least seven people died in a bomb explosion in the country's southwestern Baluchistan province today, Agence France-Presse reported, citing police. The blast, which injured six others, occurred in the town of Dera Bugti.

To contact the reporter on this story: Farhan Sharif in Karachi at Fsharif2@bloomberg.net

Last Updated: October 20, 2007 04:55 EDT