A suicide bomber blew himself up in a packed mosque Friday in northwestern Pakistan, killing at least 50 people and wounding around 70 others.
Officials said the mosque, full of worshippers for Friday prayers, was destroyed and has collapsed. It is located near a police check point and is visited by paramilitary forces and tribal police.
There has been no claim of responsibility.
The attack took place in Jamrud town in the Khyber tribal agency, an area where Islamic insurgents have increased attacks on trucks carrying supplies for U.S. and NATO troops in Afghanistan.
The bombing came just hours before U.S. President Barack Obama announced a comprehensive new strategy for Afghanistan and Pakistan. Mr. Obama says al-Qaida terrorists are planning more attacks on the United States from safe havens in Pakistan and urged Islamabad to be a stronger partner in the fight against militants.