Bomb explodes outside Shiite mosque in northwest Pakistan

Police say a bomb has exploded outside a Shiite mosque in northwest Pakistan, killing at least four people and wounding five. Police officer Abdul Ghafoor said the bomb exploded near the outer wall of the mosque in Dera Ismail Khan as worshippers were leaving after Monday evening prayers. The blast shattered the mosque's front wall and damaged its dome. Police cordoned off the area as people sifted debris looking for survivors.