Metropolitan Police Service Assistant Commissioner Mark Rowley, Britain's top counter-terror officer, said police are confident that have in custody "some of the key players that we're concerned about". Islamic State on Wednesday claimed responsibility behind the attack.
British officials have expressed outrage over the USA leaking of classified evidence tied to the recent terror attack in Manchester and United Kingdom police have stopped sharing information on the suicide bombing with the US.
Greater Manchester Police said two men, aged 20 and 22, were detained early Saturday in the northwest England city on suspicion of terrorism offenses. British police investigating the Manchester Arena bombing arrested a ninth man while continuing to search addresses associated with the bomber. British authorities are angry that photos showing the bomb's detonator, battery, and some shrapnel from the bomb were published by the New York Times.
At least 22 people were killed and dozens others wounded when a suicide bomber blew himself up at the end of a concert by USA singer Ariana Grande outside the Manchester Arena.
British police have temporarily stopped sharing some information with the United States about the Manchester terror investigation following a string of leaks by U.S. officials to the media.
On Monday night, an explosion occurred outside the Manchester Arena at the end of Grande's concert, leaving at least 22 people dead and dozens more injured.
According to The Daily Telegraph, investigators now believe Abedi made the explosive himself in a makeshift bomb factory - and could have handed out additional devices to other terrorists.
British Prime Minister Theresa May raised concerns with U.S. President Donald Trump on Thursday over leaks to U.S. media about the Manchester suicide bombing, a British government source said. The Guardian and ITV News reported that UK Prime Minister Theresa May was going to raise the issue with US President Donald Trump at a North Atlantic Treaty Organisation summit in Brussels on Thursday.