A bomb possibly aimed at an anti-Taliban activist exploded at a mosque in northwest Pakistan during Friday prayers, killing at least 20 people and wounding 30 others, officials said.
The blast was the latest in a series of attacks to hit mosques and Sufi shrines in Pakistan, and underscored the relentless security challenge to a nation where Islamist militancy - as well as enmity among the various Muslim sects - have long run rampant. (AP)













