WORLD IN BRIEF : PAKISTAN : Gunmen Massacre 7 Sunni Muslims

Gunmen tied up and executed seven Sunni Muslim men, apparently in retaliation for the slaughter of Shiite Muslim worshipers last weekend, authorities said. An eighth man who was shot in the head survived, and five women were beaten with rifle butts but were not shot, police said. The massacre occurred in a middle-class Karachi neighborhood near two Shiite mosques where 20 worshipers were fatally shot Saturday. Sunni and Shiite extremists have been waging sectarian battles in the last year, leaving hundreds dead in the southern port city.