Watch: Moment of the blastpublished at 02:30 British Summer Time 23 May 2017
Amateur footage has captured the sound of the blast and a flash of light outside Manchester Arena.
Manchester Arena: Dashcam 'captures moment of blast'
Summary
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
Watch: Moment of the blastpublished at 02:30 British Summer Time 23 May 2017
Media caption, 'There was smoke everywhere'published at 02:30 British Summer Time 23 May 2017
Tori told BBC Radio Manchester she was at the concert with her younger sister, who is 12.
She said: "We came out of the Arena near the station. The explosion went off. You could see people running down the stairs.
"I grabbed by sister's head and ducked her down under the chairs because I could see hundreds of girls running down the stairs and there was no way out.
"I rang my boyfriend saying 'I don't know what to do' and he said 'try to get out as quick as you can'.
"We got into the foyer and there was smoke everywhere and it smelt of dirty gas - I can't describe it... I don’t know what it was.
"When we finally got out there was people lying everywhere. They had bandages on their heads.
"My 12 year old sister grabbed onto me and said 'I love you' - it was horrible."
Plea from emergency servicespublished at 02:27 British Summer Time 23 May 2017
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End of twitter postMayor tweets #RoomforManchester supportpublished at 02:26 British Summer Time 23 May 2017
Greater Manchester's newly-elected mayor Andy Burnham urges people to follow #RoomForManchester if they need somewhere to stay
Eyewitness: 'The heat smacked us in the face'published at 02:24 British Summer Time 23 May 2017
BBC Radio 5 liveTwo women at the concert said: "We saw it was really quite close to us....a massive bang....huge...fire just went up in the air and we thought...the heat smacked us in the face...everyone rushing to get back up the stairs....pushing each other....shoving each other...crying.."
No services to or from Manchester Victoria stationpublished at 02:21 British Summer Time 23 May 2017
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End of twitter postTheresa May: This is an appalling terrorist attackpublished at 02:20 British Summer Time 23 May 2017
Prime Minister Theresa May has paid tribute to the victims and families of those involved in "what is being treated by the police as an appalling terrorist attack".
'Carnage at pop concert'published at 02:19 British Summer Time 23 May 2017
The Scottish Daily Mail has updated its front page with news of the 'terror blast' at Manchester Arena
Mayor pays tribute to victimspublished at 02:15 British Summer Time 23 May 2017
Greater Manchester Mayor Andy Burnham paid tribute to the victims and their families in a tweet. He also praised the work of the "brave" emergency services.
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End of twitter postManchester Arena a 'very easy target'published at 02:14 British Summer Time 23 May 2017
City councillor Pat Karney told BBC Radio 5 live the arena was "a very easy target".
"A concert hall where young people are enjoying music - and nobody would contemplate anything like this happening," he added.
"Everyone in the city is shocked, having seen how young some of these young people are, our thoughts are obviously with their families."
Screaming fans and anxious parentspublished at 02:05 British Summer Time 23 May 2017
This video from outside the arena was posted on Instagram by Zach Bruce.
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End of instagram postCrowds and sirens as people flee arenapublished at 01:56 British Summer Time 23 May 2017
Witness Sebastian Diaz filmed these scenes of people fleeing Manchester Arena after the suspected explosion.
Media caption, Witness Sebastian Diaz filmed these scenes of people fleeing Manchester Arena
Grande 'a huge draw for young fans'published at 01:52 British Summer Time 23 May 2017
Ian Youngs
Entertainment and Arts Reporter, BBC NewsManchester Arena, formerly known as the MEN Arena, is the biggest indoor venue in the city, with a capacity of about 18,000.
The arena foyer connects with Victoria train and tram station, a major hub on the northern edge of the city centre.
The arena regularly hosts concerts by major stars like Ariana Grande - a 23-year-old American TV teen actress-turned-pop star.
She's a big draw for young fans, with hits including Problem, featuring Iggy Azalea, which hit number one in the UK in 2014; and Side To Side, featuring Nicki Minaj, which reached number four last year.
She's currently on a European tour - she's already played Birmingham and Dublin and is due to be at the O2 Arena in London on Wednesday and Thursday.
Police patrol nearby areaspublished at 01:51 British Summer Time 23 May 2017
A policeman patrols Manchester Victoria train station, which is close to the arena.
Image source, Getty ImagesControlled explosion 'not suspicious'published at 01:48 British Summer Time 23 May 2017
Greater Manchester Police have confirmed, external the controlled explosion in Cathedral Garden, near the Manchester Arena, was abandoned clothing and not a suspicious item.
At the scene: 'There's a huge sense of confusion'published at 01:48 British Summer Time 23 May 2017
Tom Mullen
Reporter, BBC News OnlineThe police activity around the arena has been huge. There are blue flashing lights and cordons seemingly on almost every street corner.
I've spoken to people who are shaken, scared and often tearful. One thing that's apparent is there are many, many young people, some of them with parents or guardians. One mother told me her priority was simply to get her daughters home.
Other people have described seeing people covered in blood, or being treated by paramedics. There's a huge sense of confusion and people are constantly searching for information while letting their families know they're safe.
Controlled explosion heard live on airpublished at 01:45 British Summer Time 23 May 2017
Media caption, The BBC's Ed Thomas was reporting on the BBC News Channel
'The whole building shook'published at 01:45 British Summer Time 23 May 2017
One caller to BBC Radio Manchester, Emma Johnson, said she and her husband were at the arena to pick up their daughter, 15 and 17-year-old son, who had been to the concert.
"It was definitely a bomb. It was definitely in the foyer - about 15 feet away. We were stood at the top of the stairs and the glass exploded - it was near to where they were selling the merchandise.
"The whole building shook. There was a blast and then a flash of fire afterwards.
"We obviously then run to try and find our children and fortunately for us we were all safe to tell the story.
"We're just so grateful to be home and safe - I'm just praying for everybody else with loved ones there."
Corbyn tweets support for injuredpublished at 01:41 British Summer Time 23 May 2017
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End of twitter postLoved ones helpline coming as soon as possiblepublished at 01:41 British Summer Time 23 May 2017
Greater Manchester Police tweets...
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