ISLAMABAD, Pakistan (AP) – Hundreds of religious students protested Friday at Islamabad’s Red Mosque and blocked a government-appointed cleric from leading prayers at its planned reopening, more than two weeks after a bloody army siege that left over 100 people dead.

The protesters demanded the return of the mosque’s pro-Taliban former chief cleric, Abdul Aziz – who is in government detention – to lead Friday afternoon prayers, and shouted slogans against President General Musharraf.

“Musharraf is a dog! He is worse than a dog! He should resign!” students shouted. Some lingered over the ruins of a neighboring seminary that was demolished by authorities this week. Militants had used the seminary to resist government forces involved in siege.

The crowd also shouted support for the mosque’s former deputy cleric, Abdul Rashid Ghazi, who led the siege until he was shot dead by security forces after refusing to surrender.

“Ghazi your blood will lead to a revolution,” the protesters chanted. Dozens clambered on the mosque’s roof to continue the protest, including one waving a large black flag.

Armed police stood by on the street outside the mosque, but did not enter the courtyard where the demonstration was taking place.

In a speech at the main entrance to the mosque, Liaqat Baloch, deputy leader of a coalition of hardline religious parties, the Mutahida Majlis-e-Amal (MMA), condemned Musharraf as a “killer” and declared there would be an Islamic revolution in Pakistan.

“Maulana Abdul Aziz is still the prayer leader of the mosque. The blood of martyrs will bear fruit. This struggle will reach its destination of an Islamic revolution. Musharraf is a killer of the constitution. He’s a killer of male and female students. The entire world will see him hang,” Mr. Baloch said.

Pakistan’s Geo television showed scenes of pandemonium inside the mosque, with dozens of young men in traditional Islamic clothing and prayers caps shouting angrily and punching the air with their hands. Maulana Ashfaq Ahmed, a senior cleric from another mosque in the city who was assigned by the government to lead Friday’s prayers, was quickly escorted from the mosque, as protesters waved angry gestures at him.

Friday’s reopening was meant to help cool anger over the siege, which triggered a flare-up in militant attacks on security forces and widespread anger that a religious site had been the scene of violence.

Public skepticism still runs high over the government’s accounting of how many people died in the mosque siege, with many still claiming a large number of children and religious students were among the dead. The government says the overwhelming majority were militants.

Mohammed Jesanjir, a 14-year-old student from a religious school elsewhere in Islamabad that is connected to the mosque, said Musharraf “will be humiliated like he humiliated the Quran,” Islam’s holy book, by ordering the mosque raid.

“God willing, we will take revenge,” he said.

Wahajat Aziz, a government worker who was among the protesters, said officials were too hasty in reopening the mosque.

“They brought an imam that people had opposed in the past,” he said. “This created tension in the environment. People’s emotions have not cooled down yet.”

Security was tightened in Islamabad ahead of the mosque’s reopening, with extra police taking up posts around the city and airport-style metal detectors put in place at the mosque entrance used to screen worshippers for weapons.

Militants holed up in the mosque compound for a week before government troops launched their assault on July 10, leaving it pocked with bullet holes and damaged by explosions.

At least 102 people were killed in the violence. Attacks by militants in northwestern Pakistan along the border with Afghanistan have surged since the siege, killing about 200 others in suicide bombings and clashes, many of them security forces.