Blast at Pakistan mosque kills at least 20-media

ISLAMABAD Fri Aug 19, 2011 5:39am EDT

ISLAMABAD Aug 19 (Reuters) - A blast ripped through a congregation of worshippers during Friday prayers at a mosque in Pakistan's northwestern tribal region of Khyber, killing at least 20 people, local television channels reported.

The reports said more than 50 people were also wounded in the attack in Jamrud, the main town of Khyber, where militants have been active for the past several years. (Writing by Augustine Anthony; Editing by Chris Allbritton)