The head of a radical mosque in the Pakistani capital, Islamabad, has threatened to use suicide bomb attacks against the government
Maulana Abdul Aziz made his defiant call to thousands of followers during Friday prayers.
The government is facing calls to clamp down on the activites of students in two madrassas attached to the mosque.
If the government does take action, "our last resort will be suicide bombings", Mr Aziz declared.
He also demanded that the government close down Islamabad's video shops and brothels within one month.
The Taleban-style activity of Mr Aziz's followers in the capital has caused outrage among human rights activists.
Last week female students from a madrassa that is part of Mr Aziz's Lal Masjid (red mosque) complex abducted a woman they accused of running a brothel, holding her captive for two days.
Some of the students are also staging an armed occupation of a children's library in the capital.
The government says it hopes to resolve its differences by peaceful means.
"If the government says it will launch an operation against us as a last resort, our last resort will be suicide bombings," Mr Aziz told his supporters.
"What is our way?" he asked them, the Associated Press news agency reports.
The students called back, "Jihad, jihad (holy war)".
"I give a deadline of one month to the government to close brothels and video shops," Mr Aziz said.
"If the government fails we will take action."
Outside the mosque, a group of supporters set fire to a pile of videos and CDs.
Mr Aziz also said he had set up a Sharia law court at the mosque, made up of 10 clerics.
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