Manchester attack: Police arrest 25-year-old in Old Trafford

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

A teenage boy and a woman arrested by British police this week have since been released without charge, leaving 14 in British custody.

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

Investigators say they have dismantled a large part of Abedi's network, but expect to make more arrests.

She refused to say how many times temporary exclusion orders had been used, but confirmed "we have started to use them".

A third of those killed in Monday's bombing were children, and another 116 people were injured.

"The intelligence services are still collecting information about (Abedi) and about the people around him", Rudd said.

Her comments came after police issued CCTV stills of Abedi, wearing glasses and casual clothes, in a plea for information about his movements between May 18 and the attack four days later.

A police officer guards the entrance to a street in the Moss Side area of Manchester on May 28, 2017 during an operation.

On Friday, UK Security Minister Ben Wallace told CNN in Manchester that there are "over 400 investigations now ongoing by the security services and police into terrorist planning or people thinking about terrorist planning".

They have made an appeal to the public for information about the bomber's movements since 18 May, when he returned to the United Kingdom from Libya.

"I would not rush to conclusions ... that they have somehow missed something", Rudd said.

British police now have 13 suspects in custody - including Abedi's elder brother Ismail - and have searched properties across Manchester, a city in northwest England.

When asked how many potential militants the government was concerned about, Rudd said Britain's security services were tracking 500 different potential plots, involving 3,000 people as a "top list", with a further 20,000 beneath that.

Britain on Saturday reduced its terror threat level from critical - its highest level - to severe.

A man shakes hands with a police officer as he delivers flowers close to the scene of the blast in Manchester, England, Wednesday, May 24, 2017, after the suicide attack at an Ariana Grande concert that left 22 people dead as it ended on Monday night at the Manchester Arena.

The 22-year-old, of Libyan origin, was born in the northwestern English city.

A flat at Granby House in Manchester centre is now believed to have been the final assembling place for the explosive device.

Assistant Chief Constable Steve Barry, of Sussex Police, said: "I understand that this kind of activity can cause concern for people living in nearby communities and would like to thank them for their understanding and patience".

  • Carolyn Briggs