vehicle veered off the road and mowed down pedestrians on London Bridge, turning a summery Saturday night into a scene of panic and chaos. Prime Minister Theresa May said it was being treated as a potential terrorist attack.

Police said armed officers were also responding to reports of stabbings nearby. The BBC reported that more than one person had been killed.

The Metropolitan Police said they were called just after 10 p.m. local time to reports of a vehicle hitting pedestrians on the bridge, which crosses the River Thames in central London.