16th person arrested in Manchester bombing

Police said they have arrested a large part of the network behind the bombing, which killed 22 people at a concert hall, and four more men were arrested over the weekend as police continued to close in on the group.

Fourteen people are now in custody in relation to the attack, including a 23-year-old man arrested early Monday in the southern coastal town of Shoreham-by-Sea on suspicion of terrorism offenses.

Seven children were among the 22 people who died when Abedi detonated a bomb on 22 May at the end of a concert by U.S. singer Ariana Grande at Manchester Arena. Police had earlier given the man's age as 23.

(AP Photo/Rui Vieira). Marathon runners smile on their way to start line for the Great Manchester Run in Manchester, England Sunday, May 28, 2017.

"In early 2017 the Federal Bureau of Investigation told MI5 that Abedi belonged to a North African terror gang based in Manchester, which was looking for a political target in this country", a British security source told the Daily Mail on Sunday.

MI5 has launched a probe into its own failure to flag the threat posed by the Manchester suicide bomber, Home Secretary Amber Rudd said.

Police have issued a photograph of Abedi, a 22-year-old Briton born to Libyan parents, taken on Monday night before he blew himself up and said they believed he had assembled his bomb in an apartment in the city centre. Abedi's elder brother Ismail is among the suspects being held in Britain, and a younger brother and Abedi's father have been detained in Libya.

On Saturday morning, British Prime Minister Theresa May announced the United Kingdom threat level was lowered from critical to severe.

"The security services will know a lot of people, it doesn't mean they are expected to arrest everybody that they know, but it is somebody that they had known before and I'm sure when this investigation concludes we'll be able to find out more", Rudd said when asked if Abedi was already known to security services.

Greater Manchester Police have made an appeal to the public for information about his movements since 18 May, when he returned to the United Kingdom from overseas.

On Sunday, the United Kingdom scaled down the terrorist threat in the country from "critical" to "severe".

Eleven other men, aged between 18 and 44, are in custody.

People look at floral tributes for the victims of the Manchester Arena attack, in St Ann's Square, in central Manchester, Britain May 27, 2017.

Three people were arrested, but quickly released during the operation at Moss Side, leading them to post an outraged sign on their front door.

  • Leroy Wright