The third London Bridge attacker has been named as a Moroccan-Italian called Youssef Zaghba.
Reports say he was detained by Italian authorities trying to reach Syria last year.
It's been revealed that one of the London Bridge attackers Rachid Redouane spent some time living in Rathmines in Dublin.
A second man involved Khuram Butt had previously been investigated by MI5 and had appeared in a TV documentary called 'The Jihadis Next Door.'
These locals in Rathmines say they are shocked that one of the attackers lived in the area
Meanwhile, a nurse who tried to help injured people on Saturday night has been identified as the third victim.
Kirsty Boden's family say she was "selfless, caring and heroic".
A minute's silence has been held - people stood under umbrellas at London Bridge, in front of hundreds of bunches of flowers.
Kim Buckley has this report:
This is how Britain fell silent as people paid their respects to those killed and injured in the London attacks https://t.co/guBIChFo1y pic.twitter.com/PsYuoYBPJw
— BBC News (UK) (@BBCNews) June 6, 2017