People are gathering and laying flowers on May 24, 2017 at the base of the statue of St. Anne's Square in Manchester, England in memory of the victims of the Manchester Arena attack during Ariana Grande's concert on May 22, 2017.
"Today we are releasing an image of Salman Abedi taken from CCTV on the night he committed the attack", they said in a statement. "Two men - aged 22 and 20 - have been arrested on suspicion of offenses contrary to the terrorism act".
A huge bank holiday weekend security operation is under way as tens of thousands of people attend major spectacles including the FA Cup Final at Wembley and the Premiership Rugby Final at Twickenham.
Grande retreated to her hometown of Boca Raton, Florida, in the days after the attack.
A former police chief also called for the reintroduction of internment camps where those suspected capable of carrying out extremist attacks could be detained.
British police investigating the lethal concert bombing in Manchester say they have made two more arrests.
A bomb disposal truck is parked outside a house in Moss Side, Manchester during a police operation linked to suspected plotters of the Manchester Arena terror attack.
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British officials have confirmed he had recently returned from Libya and the officers said that police needed information about his movements since his return to Britain on May 18.
Media have reported that people who knew Abedi had raised concerns about him and his views as long ago as five years before he carried about Monday's attack.
"But I would not rush to conclusions, as you seem to be, that they have somehow missed something".
"Our priorities are to understand the run up to this awful event and understand if more people were involved in plotting this attack", the statement read. "It might be just a question mark about one of them or something serious with that top list", she said.
Both the university and the Student Loans Company refused to comment. Technology companies such as WhatsApp say they can not break end-to-end encryption.
"We will continue to honor the ones we lost, their loved ones, my fans, and all affected by this tragedy", she added.