Supporters of Pakistan's main religion-based parties have marched in the capital, Islamabad, to protest a nationwide crackdown on suspected Islamic militants.
More than 1,000 demonstrators marched in Islamabad Friday, chanting religious and anti-American slogans and demanding the release of those detained.
Organizers say they object to raids on religious schools and mosques in a crackdown that they say is an effort to appease the United States and the West.
More than 300 people have been detained so far across Pakistan since the London bombings on July 7 carried out by British Muslims of Pakistani origin who had visited the country before the attacks.
In a nationwide address Thursday, Pakistani President Pervez Musharraf sought the support of Pakistanis in the fight against extremism and terrorism.