28-year-old Usman Khan previously plotted to bomb the London Stock Exchange
It's emerged a man who stabbed two people to death on London Bridge yesterday, had previously been jailed for plotting to bomb the London Stock Exchange.
28-year-old Usman Khan was handed an indeterminate sentence in 2012 - but this was overturned a year later at the Court of Appeal.
He was out on licence, having served seven years of a 16-year term.
Three people, also injured in the attack, remain in hospital.
Usman Khan, who was wearing a fake explosives vest - was shot dead by police.
The suspect was wrestled to the ground and disarmed by members of the public.
Boris Johnson says there will be more police officers visible in the area.
Meanwhile election campaigning across the UK has largely been cancelled today, in the wake of the terror attack on London Bridge yesterday afternoon.
The Conservatives, Labour and Liberal Democrats say they've postponed their events "as a mark of respect" for the victims.
SNP leader Nicola Sturgeon is still expected to give a speech later.