The brother of suicide bomber Salman Abedi who killed 22 people when he launched an attack at an Ariana Grande gig in Manchester has been arrested amid reports he was "planning a terror attack in the Libyan capital".
A spokesman for Libya's counter-terror force said: "We have evidence that he is involved in Daesh (Islamic State) with his brother".
"The British police have been very clear that they want to control the flow of information in order to protect operational integrity, the element of surprise, so it is irritating if it gets released from other sources", British interior minister Amber Rudd said on Wednesday when asked about the United States leaks by the BBC. He did not give any details on the reasons why the father was arrested. As the public struggled to comprehend the horror of Monday's terrorist attack in Manchester, they naturally wanted to know who had committed this bad crime.
Abedi, a Manchester-born man of Libyan origin who may have been radicalised in Syria, recently dropped out of college.
Home Secretary Amber Rudd said Abedi "likely" did not act alone.
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"And as I've said, it continues at a pace. Our way of life has once again been threatened but we will overcome this together", the statement said.
The official threat level in Britain was raised late on Tuesday for the first time in a decade to its highest level, "critical", meaning an attack could be imminent. But Greater Manchester Police said it could not formally name the victims until forensic post-mortems were concluded, which could take four to five days.
The changing of the guard ceremony at Buckingham Palace was canceled Wednesday so police officers could be redeployed.
Shows Thursday and Friday in London were cancelled, along with concerts through June 5 in Belgium, Poland, Germany and Switzerland.
It came as three men were arrested in Manchester on Wednesday as part of the investigation into the suicide bomb attack. Concert promoter Live Nation said in a statement that ticket holders will get refunds.