London Bridge Attack: 7 Killed, 48 Wounded; 3 Suspects Shot Dead by Police

Seven people were killed and 48 injured after three knife-wielding assailants led a deadly rampage through central London, plowing a van into pedestrians on London Bridge and then running to a nearby open-air market. British Prime Minister Theresa May called for tougher measures to fight extremism, as police arrested 12 people in connection with the attack.