Intelligence sharing between the UK and the US resumes after row
Police search a property in Wigan following an assessment by a bomb disposal team
Police say they have made "significant" arrests - eight people are still in custody
Raids on properties have yielded "very important" items, police say
The Queen has visited victims at Royal Manchester Children's Hospital
A national minute's silence has been held to remember victims
Suspected suicide bomber is UK-born Salman Abedi, 22, of Libyan origin
In a statement, the school says:
Quote MessageWe are a Manchester school. We feel the pain that Manchester feels. We stand shoulder to shoulder with our fellow Mancunians against terrorism in all its forms. Our deepest condolences go to all who have been affected by this outrage."
In the wake of the Manchester bombing and other terrorist attacks, "the public are wondering whether the whole idea of mass migration, of a borderless society, is really a good idea", says Douglas Murray of think tank the Henry Jackson Society.
But former Labour MP Hazel Blears, who was responsible for counter-extremism when she was communities secretary, insists: "The overwhelming majority of the Muslim community would reject this ideology."
She claims that extremists and their views can be countered: "They're actually very simple. They're actually very stupid."
However, when Mr Murray says the Prevent counter-radicalisation strategy is better than no strategy at all, Ms Blears agrees.
Former One Direction star Harry Styles has called on fans to "choose love" and paid tribute to the victims of the Manchester Arena bombing during a live appearance in Mexico.
"When I booked this show I wanted to celebrate with you guys. I've played some of my favourite shows in Mexico and it felt right to come and celebrate with you," he told fans in Los Cabos.
"Tonight doesn't feel like a night to celebrate. Last night there was a tragedy in my home town of Manchester and I've been left with a hole in my heart.
"I went to my first show in the Arena and I've had some of my best experiences in my life in Manchester."
He added:
Quote MessageWe have a choice every single day we wake up of what you can put in the world and I ask you to please choose love every single day.
The Huffington Post
An appeal to raise money for homeless Stephen Jones, who has told how he helped children injured in the attack, has raised £30,000, the Huffington Post reports., external
BBC News Channel
Omar Al-Feturi is a neighbour of Salman Abedi in Manchester and saw people arrested this morning. He described him as a "calm neighbour".
"He doesn't kind of get involved in problems with anybody and he's very nice and smiley when he deals with people. You see him, you know, go to mosque."
Image source, PAAndy Burnham has returned from the scene of the attack, saying it was "incredibly difficult" to see.
Manchester's metro mayor added that the attacker, Salman Abedi, was an "utterly depraved individual".
He said: "The difficult thing for us here today, of course, is he grew up here."
The father of Manchester bombing suspect Salman Abedi reportedly had links to the militant Libyan Islamic Fighting Group (LIFG), which opposed the former regime of Colonel Gaddafi and had al-Qaeda connections.
BBC security correspondent Gordon Correra says many LIFG people "found a home in Britain" when UK government policy was anti-Gaddafi,
"Over the last 20 or 30 years," Gordon adds, the intelligence services' attitude to the group has varied according to UK relations with Libya.
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A father from Helmshore has spoke of his gratitude to a passer-by who stopped to help his daughter after the explosion at Manchester Arena.
Rockey McGovern's daughter, 14-year-old Ella, was speaking on the phone to her mum, Louise, when the attack happened.
She has been treated for leg injuries and is now back home. Rockey says a woman stopped and stayed with Ella:
Quote MessageA kind lady literally stopped in her tracks and decided she needed to stay with her, comfort her and talk to her. It was incredibly upsetting for me and my wife; we couldn't be with our daughter and she filled that gap. That means the world to us.
Rockey McGovern, Father of Manchester attack victim
Saffie Roussos from Leyland, aged eight is the youngest person known to have died in the explosion so far.
Image source, PATeachers and pupils at Tarleton Primary School where she attended held an emotional assembly to remember her this morning and sang Don't Stop Believin' by Journey.
Head teacher Chris Upton said she was "a beautiful little girl in every aspect of the word" who was "quiet and unassuming" and "loved by everyone".
Police in Northern Ireland are deploying extra officers at key sites, following the government's decision to raise the terror alert to "critical".
The areas include "iconic sites", transport networks and anywhere large numbers of people congregate.
Chief Constable George Hamilton said the PSNI would do all it could to keep people safe.
BBC Newsbeat
Image source, Martyn Hett / FacebookMartyn Hett was well-known on the Manchester gay scene and had appeared on Channel 4's Come Dine With Me.
He made headlines after a launching a social media campaign to help his mum sell her homemade toys after no-one bought any of her work at a local craft fair., external
His boyfriend, Russell Hayward broke the news of his death online, writing that Martyn "left the world exactly as he lived, centre of attention".
'Social media celebrity' Martyn was killed in the suicide attack at Ariana Grande's Manchester gig this week.
Read MoreSecondary school pupil Nell Jones, 14, from Cheshire, died in the arena on Monday, the head teacher of Holmes Chapel Comprehensive School has said.
Labour's Lucy Powell argues that "it's really important in the face of these atrocities... that we don't start pointing the finger [and] pitting community against community".
Manchester City midfielder Yaya Toure and his agent will donate £100,000 to help the victims of the Manchester Arena attack.
Read More
Image source, Getty ImagesManchester music legend Morrissey has split social media audiences after writing a controversial piece on Facebook, attacking British politicians following the Arena bombing.
The Facebook post reads, external: "Theresa May says such attacks "will not break us", but her own life is lived in a bullet-proof bubble, and she evidently does not need to identify any young people today in Manchester morgues."
Morrissey, who also marked his 58th birthday yesterday, accused London mayor Sadiq Khan of not condemning so-called Islamic State - "who have claimed responsibility for the bomb".
"Manchester mayor Andy Burnham says the attack is the work of an 'extremist'", he wrote. "An extreme what? An extreme rabbit?"
"In modern Britain everyone seems petrified to officially say what we all say in private."
The outspoken singer added politicians "are never the victims".
His views have sparked a fierce online debate, with some pointing to the murder of MP Jo Cox last year as proof he's got it wrong.
However, some have agreed with his views. Georgina McGowan says, external:
Quote MessageFinally, the voice of reason. The truest statement I've read all day about the Manchester attack. #Morrissey"
Braian Donnolly agrees, external:
Quote MessageManchester's favourite son with a response truer than most."
However, Tourist writes, external:
Quote MessageHey Morrissey, do you remember Jo Cox?"
While JulietteAdAstra adds:, external
Quote MessageJo Cox wasn't 'protected from the line of fire', was she, Morrissey?"
Ami Boughter also seems disappointed in his comments:, external
Quote MessageI love Morrissey records. But when that man opens his mouth to speak- about the state of absolutely anything, I immediately stop listening."
Image source, Getty ImagesMusic journalists and writers in the UK and America are in almost unanimous agreement that the attack on an Ariana Grande concert aimed largely at empowering young girls was "no coincidence."
Police have named 22-year-old Salman Ramadan Abedi, a Manchester man of Libyan descent as the bomber at the Arena, while so-called Islamic State have laid claim to the attack - though that has yet to be verified.
Alexis Petridis in The Guardian argues music aimed at young girls provides:
Quote Message...the kind of empowering, transcendent experience that terrorists hate.
The Telegraph's Neil McCormick insists "targeting Ariana Grande was no accident" as:
Quote Message...she represents the kind of girl power extremists hate.
In the US, Emily Crockett wrote in Rolling Stone that it was a "deliberate attack on girls" and that:
Quote MessageMisogyny was woven into this act of violence.
While James Harkin in fellow US publication Billboard, argued:
Quote Message...it seems unlikely to have been a coincidence given that a hatred of Western pop music, combined with viciously medieval ideas of female virtue and vice, has been central to the rise of the Islamic State since its beginning.
A former classmate has described suicide bomber Salman Abedi as a "very jokey lad" but added he was "very short tempered."
The pair both went to Burnage Academy for Boys.
"What I realised was he had a short temper but apart from that was a very sound lad," the man told BBC News.
He said that, before leaving the school in 2011, Abedi became "more and more religious" and that this might explain why he cut ties with former classmates.
BBC Radio 3 tweets...
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Tom Mullen
Reporter, BBC News Online
A veil of silence and quiet respect has descended over Manchester as people try to get back to a sense of routine. But as the city continues to mourn, many say they are struggling to readjust to normality.
Tuesday's proud show of solidarity and defiance at a vigil in Albert Square appears to have given way to a sense of deep sadness, with dozens of people pausing to read the many tributes left around the city centre.
Among the cards and flowers at St Peter's Square, a T-shirt emblazoned with a Union Jack reads simply "Isis coward".
