Britain's MI5 intelligence service launched an internal inquiry on Monday (May 29) into whether vital clues were missed in the run-up to the Manchester suicide bombing, as police arrested another man in connection with the attack.

The 23-year-old was held on suspicion of terror offences at an address in Shoreham-by-Sea in the early hours of Monday morning, Greater Manchester Police (GMP) said.

Fourteen men remain in custody on suspicion of being connected to the attack at Manchester Arena.

The security service, otherwise known as MI5 has started an internal review over how they handled intelligence on Salman Abedi, who was the suicide bomber at last week's Manchester Arena.

Police say they are also searching a new property in the Moss Side area of the city. "People in our communities who are being targeted by Daesh [the Islamic State terror group] and fed a false ideology".

Home secretary Amber Rudd on Sunday refused to say whether chances were missed to stop Abedi.

However, according to new reports, the singer is said to have invited other performers to join her on stage such is her determination to make this event as special as possible for the people of Manchester, and her fans who came under attack from such a cowardly act of terrorism.

It means that soldiers deployed to bolster security will stand down on Monday night as an attack is no longer considered imminent.

- An 18-year-old man, who police said was carrying a suspect package, is arrested in Wigan, a town near Manchester.

"I believe we can get them to be more successful in working with us to find a way of getting some of that information", she said.

British investigators have released pictures of Abedi taken from CCTV shortly before the attack, which also injured more than 100 people, appealing to the public for help in tracing his movements in the days before. BBC Newsnight reported that when Abedi was 16 he fought against the Colonel Gaddafi regime with his father during the school holidays.

The family of one victim, 18-year-old Georgina Callander, said her life had been cut short by "evil, evil men prepared to ruin lives and destroy families".

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.

Greater Manchester Chief Constable Ian Hopkins and Deputy Assistant Commissioner Neil Basu, senior national co-ordinator for UK Counter Terrorism Policing, said in a joint statement on Saturday: "In the past five days we have gathered significant information about Abedi, his associates, his finances, the places he had been, how the device was built and the wider conspiracy".