MI5 opens probe into missed warnings over Manchester bomber

British police have arrested a 16th person in connection with last week's suicide bombing in Manchester, Reuters reported Monday.

A further arrest of a 23-year-old man was subsequently made in the early hours at an address on the south coast of England, in the town of Shoreham-by-Sea.

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.

A total of 16 people have now been arrested in connection with the attack, with 14 men remaining in custody.

A police officer guards the entrance to a street in the Moss Side in Manchester during an operation.

United Kingdom secret intelligence service MI5 has reportedly launched two urgent inquiries into how it could have missed the danger posed by the Manchester suicide bomber.

- Police arrest a 24-year-old man in the Chorlton area of south Manchester near where Abedi is believed to have lived.

Violet Mainda, who owns a hairdresser's salon beneath the flat where he was arrested, said she believed the man who lives there was training or had trained to be a pilot, adding: "He was a normal bloke, very jovial".

MI5 launched a "post incident investigation" into how Abedi was overlooked by the service, the BBC said Monday, as a second, separate inquiry was undertaken for ministers and others who oversee MI5's work.

They say he returned to Britain from Libya on May 18, and likely completed assembling his bomb at a rented apartment in central Manchester.

Home Secretary Amber Rudd refused to comment on whether opportunities were missed to spot the murderous intent of Abedi before the deadly attack, as national security became the major issue in the general election campaign. He died in the attack, Britain's worst for more than a decade.

Searches are also under way at addresses in Chester and in the Whalley Range area of Manchester this morning.

Manchester City Council called a vigil in the centre of the northwest English city at 2131 GMT - the exact moment that 22-year-old Salman Abedi detonated his bomb outside a pop concert by teen idol Ariana Grande in one of Europe's biggest indoor arenas.

In the Libyan capital Tripoli, Abedi's younger brother 20-year-old Hashem and their father, Ramadan, are being held by special forces linked to the country's interior ministry.

On Sunday, police released photographs from security cameras showing Abedi on the night of the massacre, wearing jeans and trainers, a black bodywarmer and a baseball cap, with the straps of his backpack visible on his shoulders.

Britain's official terror threat level was set at "critical" in the days after the attack but was downgraded Saturday to "severe".

  • Leroy Wright