After militants killed seven people and injured 48 in London, British Prime Minister Theresa May resumes campaigning on Monday just three days before a national election which polls show is much tighter than previously predicted.
May said Britain must be tougher in stamping out Islamist extremism after three knife-wielding assailants rammed a van into pedestrians on London Bridge and stabbed others nearby.
Following the third militant attack in Britain in less than three months, May said Thursday's election would go ahead and that Britain had been far too tolerant of extremism.
"Violence can never be allowed to disrupt the democratic process," May, who served as interior minister from 2010 to 2016, said outside her Downing Street office on Sunday.
Islamic State, which is losing territory in Syria and Iraq to an offensive backed by a U.S.-led coalition, said its militants were responsible for the attack, though it is unclear what links the attackers had to the group.