Salman Taseer Funeral Draws Thousands Under Tight Security (PHOTOS)

LAHORE, Pakistan (AP) -- Thousands of Pakistani police were on high alert in Lahore on Wednesday ahead of the funeral for an outspoken provincial governor shot dead by a bodyguard reportedly enraged by his opposition to laws decreeing death for insulting Islam. (Scroll down for photos of the funeral)

Punjab Gov. Salman Taseer, a high-profile, 66-year-old businessman and media tycoon, was a stalwart of the ruling Pakistan People's Party, and his assassination Tuesday sent nuclear-armed Pakistan reeling at a time of great political turmoil.

Taseer, regarded as a moderate voice in a country increasingly beset by zealotry, was a close ally of U.S.-backed President Asif Ali Zardari. He is the highest-profile Pakistani political figure to be assassinated since former Prime Minister Benazir Bhutto was slain three years ago, and his death underscores the growing danger in this country to those who dare to challenge the demands of Islamist extremists.

Khusro Pervez, the commissioner of Lahore, told reporters Wednesay that city authorities had deployed additional police in the city to ensure peace before and after Taseer's funeral.

"Police are on maximum alert. Police are guarding all important installations in the city," he said.

Thousands of police were guarding Taseer's residence and other key sites.

An intelligence official who interrogated the suspect, Mumtaz Qadri, said the 26-year-old commando had been planning the assassination since learning four days ago that he would be deployed with the governor.

The intelligence official said Qadri said he was proud to have killed a blasphemer. The official spoke on condition of anonymity because he was not authorized to speak to media. Qadri was arrested immediately after the shooting but it wasn't immediately clear Wednesday whether he had been officially charged with a crime.

Political allies questioned why Taseer hadn't been better protected, given the weeks of angry protests outside the governor's mansion over his opposition to the blasphemy laws. Taseer was shot in the back in the Pakistani capital, Islamabad, with an automatic weapon as he left a restaurant to walk to his car.

In a nod to his campaign for legislative reform, the leading Islamabad newspaper Dawn reported in a front page headline: "Blasphemy law claims another life."

The Daily Times banner headline read: "Punjab Governor martyred."

Prime Minister Yousuf Raza Gilani announced a three-day period of national mourning and ordered flags lowered to half-staff.

U.S. Secretary of State Hillary Rodham Clinton on Wednesday joined international condemnation of the assassination, describing Taseer's death as "a great loss."

"I had the opportunity to meet Gov. Taseer in Pakistan and I admired his work to promote tolerance and the education of Pakistan's future generations," she said in a statement, referring to her Islamabad visit in October 2010.

PPP leaders and supporters gathered at the house on Wednesday ahead of the funeral. Authorities had installed walkthrough metal detectors at the house as an added security measure for the funeral.

The governor's residence has been the scene of angry street protests in recent weeks against Taseer's call to repeal blasphemy laws that order death for anyone convicted of insulting Islam and his support for a Christian woman sentenced to die for allegedly insulting Islam's Prophet Muhammad.

Although courts typically overturn convictions and no executions have been carried out, rights activists say the laws are used to settle rivalries and persecute religious minorities.

Taseer's admirers called the governor a courageous opponent of Pakistan's shift in recent years away from South Asia's Sufi-influenced moderation to the more fundamentalist approaches to Islam found in some areas of the Middle East.

His death also came as a blow to the ruling PPP, which is struggling to retain power after the defection of a key ally from its governing coalition.

The country's leading opposition party, Pakistan Muslim League-N, on Tuesday gave the government a three-day deadline to accept a list of demands to avert a no-confidence vote that could result in the government's collapse.

But PML-N spokesman Sadiqul Farooq spokesman said on Wednesday that that deadline had been extended by three days because of Taseer's assassionation.

Overnight, Interior Minister Rehman Malik, a PPP member and friend of Taseer, visited the bloodied Islamabad street where the murder occurred and faulted guards for not surrounding Taseer as he left the restaurant.

"I am surprised to know that it was not done," Malik told reporters Tuesday night.

PPP senior leader Jehangir Badar demanded a thorough probe into the circumstances of the murder and called for calm.

Police were trying to determine how Qadri was assigned to Taseer's security detail Tuesday and whether he'd had any help.

Associated Press writer Munir Ahmed in Islamabad contributed to this report.