"This is until such time as we have assurances that no further unauthorised disclosures will occur", said a counter-terrorism source, who spoke on condition of anonymity.
That assertion clashed with information provided to Libyan authorities by Abedi's brother Hashim and his mother, who was also brought in for questioning in Tripoli.
Home secretary Amber Rudd criticised USA security officials after media in the States released attacker Salman Abedi's name before police had confirmed his identity. We learned from the American media the name of the bomber, the number of victims and the number of those injured, the identity of one of those arrested by police in the hours after the bombing - and now even details about the type of battery which appears to have been used in the explosive device used to devastating effect in Manchester.
A third brother, Ismail, was arrested in Britain on Tuesday.
Trump Hits Back at Media Following Kushner Allegations
Southern Command, said on "Fox News Sunday". "#FakeNews is the enemy!", Trump said in a series of tweets. Adam Schiff described the reports as "very concerning".
A police officer stands outside Didsbury mosque in Manchester.
Manchester's police chief said on Wednesday Abedi was part of a network, and media have reported that authorities suspect he received help constructing the bomb and planning the attack.
Tillerson said during a trip to London on Friday that the US "regrets" the leaks, which British officials complained had led to the publication of sensitive information.
"This morning we have arrested a man in the Moss Side Area", police said in a statement.
Britain views the United States as its closest ally and the countries also share intelligence as part of the Five Eyes network, which also includes New Zealand, Australia and Canada.
J.R. Smith Expects LeBron to Better in Game 4
They'll have to play with a lot more fire if they want to match the heart the Boston Celtics showed in game three of the series. The Celtics returned to their offensively sparse ways with Avery Bradley (23 points) the only player to rise above the drought.
A minute's silence was observed in honour of the victims at a square in central Manchester, after which crowds broke into an emotional chorus of "Don't Look Back in Anger", an old hit song by the band Oasis who are from the city.
"I have been thinking of my fans, and of you all, nonstop over the past week".
Corbyn says many experts including British intelligence professionals see a connection between terrorism and the wars Britain has supported, such as the one in Libya.
But on Thursday the leaks continued, culminating in a New York Times article which included detailed forensic pictures of the crime scene outside the Manchester Arena, including the remains of the bag that Abedi used. Trump, in Brussels, ignored two questions from journalists on whether Britain can trust the US with sensitive information.
In Berlin, former U.S. President Barack Obama and German Chancellor Angela Merkel sent a message of solidarity to the Manchester bombing victims.
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