Suicide bomber kills 6 at Pakistan police building

A suicide bomber in an explosives-laden pickup truck leveled a police building in northwest Pakistan on Wednesday, killing six people and wounding 30 in the latest attack to rattle the country since the U.S. raid that killed Osama bin Laden. The Pakistani Taliban claimed responsibility and said the blast was to avenge the death of bin Laden. Already this month, the al-Qaida-allied group has claimed three other revenge attacks, including a bloody 18-hour siege of a naval base.