Farooq Naik, a senior lawyer and member of the Senate or upper house of Parliament, said the chairperson of the Pakistan People’s Party had received a letter that contained the threat. The letter was purportedly written by the leader of the suicide squad, Mr Naik said.

He indicated that the bombers might be linked to al-Qaeda.
The development came five days after a suicide attack on Ms Bhutto’s homecoming rally in Karachi that claimed 140 lives and injured hundreds more.

Ms Bhutto, who returned to Pakistan on October 18 after eight years in self-exile, had alleged that three senior government officials were behind attempts to assassinate her.

Heads of ‘bombers’
The bomb blasts targeting Ms Bhutto were the work of two suicide bombers, the governor of Sindh province has said.

Governor Ishrat ul Ebad Khan said investigators have found the heads of two men that were not claimed by relatives and “almost certainly belong to the bombers”.

Mr Khan told The New York Times that police had pieced together the head of a second suspected suicide bomber. “Certainly these are extremists,” he said.

CAMPAIGN
Islamabad, pti: Benazir Bhutto has said she is mulling a “virtual” campaign for Pakistan’s upcoming general election that will use phone messages and taped speeches to avoid violent attacks like the suicide bombing of her homecoming rally in Karachi last week.
“Intimidation by murdering cowards will not be allowed to derail Pakistan’s transition to democracy,” Ms Bhutto wrote in the Wall Street Journal on Tuesday.
“We are now focussing on hybrid techniques that combine individual and mass voter contact with sharp security constraints,” she said.