British investigators said Salman Abedi, 22, set off a deadly homemade explosive outside Manchester Arena Monday night as the Grande concert ended.
The 22-year-old, who was born in Manchester and grew up in the area alongside his three brothers, was behind the deadly nail bomb that ISIS has now claimed responsibility for.
Cops revealed the identity of the lone wolf attacker, who was the son of Libyan refugees, after raiding his house in Fallowfield today where a forensic officer was seen holding a “know your chemicals” booklet.
The annoncement came after it was revealed today that, shortly before the incident, an unverified Twitter account posted cryptic tweets showing the ISIS black flag alongside the hashtags #IslamicState and #Manchesterarena.
The account then posted a message saying: ‘You forget our threat? This is the just terror’.
His account was deleted shortly afterwards. Police have declined to comment on the messages.

Youngest victim Saffie Roussos, 8, was killed after becoming separated from her mum and sister, both of whom are being treated for shrapnel wounds in separate hospitals.

Armed police in Chorlton, Manchester last night arrested a man believed to be in connection with the terror attack at the Manchester Arena last night

AT least 22 fans were killed and 59 hospitalized last night after a “terrorist bomb attack” at a teen pop concert in the Manchester Arena. Many of those killed were teenagers who had just been  watching American singer, Ariana Grande, who had just left stage.

There have been reports of up to 22 dead and hundreds injured after explosions were heard inside Manchester Arena at the end of the teen concert tonight.
ISIS have said one of its ‘soldiers’ set off the ball bearing bomb at the Ariana Grande concert. At least 119 people were injured in the worst terror attack Britain has seen since the 7/7 London bombings.
Eight-year-old Saffie Roussos, 18-year-old Georgina Callander and 26-year-old John Atkinson were among those killed. Of the injured, 59 were taken to hospital – of which at least 12 were children – and 60 were treated at the scene. The Terrorist bomb it has been said was fashioned from nuts and bolts tore which into young music fans when the blast was detonated in the foyer area of the Manchester Arena moments after a concert by teen idol, Ariana Grande ended.

Crowds run through Manchester station in panic after ‘explosion’

18-year-old Georgina Callander, [left], who posted  her meeing with her pop hero Ariana Grande [center] two years ago, was also among the dead

The suicide bomber, who was known to authorities and is said to be a 22-year-old British-born male, died inside the arena, but police were not ready to make a name public. They have not mentioned if the attacker was affiliated with any terror groups, either.
Police raided two addresses in southern Manchester, and executed a controlled explosion at one of the locations.

Injured concert goer is helped out by members of the public

Video footage showed thousands of people fleeing in tears from the venue, many covered in blood, after the Ariana Grande concert finished.
Armed officers surrounded the venue and bloodied concertgoers were pictured being helped by emergency services outside the gig.
One of the attendees Evie Brewster, described the scene:  ‘Ariana Grande had just finished her last song and left the stage when a huge explosion sounded.
‘Suddenly everybody started screaming and running for the exit.

Ariana completed her performance before the confusion began

‘There were thousands of people trying to get out at once. They were all screaming and crying. The whole place smelt smokey and burnt.
‘The explosion sounded like it was inside the building somewhere.’
Multiple law enforcement told NBC News that at least 20 people had been killed following the explosion.
Manchester’s Victoria station, which backs onto the arena, has been evacuated and all trains cancelled.

John Atkinson has been named as one of the victims

‘We were sat on the floor level and it came from the higher seats, people were running and screaming. Everyone stopped and I turned to my friend and said ‘we need to run’. Everyone was running and screaming and then when we got out it felt a bit more OK.
‘I heard five or six bangs that sounded like gunshots. When we got outside people were outside, crying and on their phones.
‘You don’t think it’s something that’s going to happen when you go…it was such a nice, fun concert.’

‘There was a bang in the left tunnel and everyone went to the middle tunnel. Then about two minutes later, there was another bang. The bang was so loud and crowds of people were running. There were lots of children and families there.’
Another witness Jenny Brewster said: ‘We were exiting the building when it happened. We’d headed towards the main doors as Ariana was performing the last song because we wanted to beat the crowds, but – as we made our way there – a wall of security men blocked it and told us to go the other way.
‘Seconds later they shouted ‘RUN!’ and the explosion happened right behind them. Hundreds of people were running and screaming. Those men saved our lives.’

 People attending the concert by Ariana Grande fled in panic on hearing the noises – some in tears

‘It was a huge explosion – you could feel it in your chest. It was chaotic. Everybody was running and screaming and just trying to get out of the area.’
Majid Khan, 22, said: ‘I and my sister, along with a lot of others were seeing Ariana Grande perform at Manchester Arena, and we were all exiting the venue when around 10.40-10.45pm-ish a huge bomb-like bang went off that hugely panicked everyone and we were all trying to flee the arena.
‘It was one bang and essentially everyone from the other side of the arena where the bang was heard from suddenly came running towards us as they were trying to exit Trinity Way and that was blocked so everyone was just running to any exit they could find as quickly as they could.
‘Everyone was in a huge state of panic, calling each other as some had gone to the toilet whilst this had gone off, so it was just extremely disturbing for everyone there.’

Ambulances rush to scene of the alleged explosion at Manchester Arena

He said: ‘I was in the toilet and heard a loud bang just after the concert had finished and people had started to leave.
‘The bang echoed around the foyer of the arena and people started to run.
‘I seen people running and screaming towards one direction and then many were turning around to run back the other way.
‘Security was running out as well as the fans and concert goers.
‘Reports of blood and people injured.’
He added: ‘In so much shock and panic. You see this on the news all the time and never expect it to happen to you. I just had to run and make sure me and my sister were safe.’

‘Everyone started screaming and we nearly got trampled on. There was a burning smell.’
A witness inside the venue, who gave only her first name, Ashley, told Sky News: ‘After the explosion, the staff in the Arena were telling us to follow the exit and go outside.
‘At first we did not think it was serious as we could not see any smoke but when we went outside we could see it was more serious.
‘There were loads of police turning up telling people to move away from the site.
‘Now there are a few people around still trying to get home – they are stuck because Manchester Station is closed.
‘I’ve not seen so many police in my life.’

‘We saw young girls with blood on them, everyone was screaming and people were running. There was lots of smoke.’
A barman at the nearby Steven Charles Snooker Club, who gave his name as Tyler, said he saw people lying on the ground covered in blood.
‘We’ve had a few people in with panic attacks and in all kinds of disarray,’ he told Press Association.
‘We’ve got four girls here – trying to get them sorted to get picked up
‘There was a gentleman on the floor with his leg all bleeding and woman with blood down one side of her face’, said Tyler a barman at the nearby Steven Charles Snooker Club. He said he saw people lying on the ground covered in blood.
‘We felt something but didn’t know what it was – there was a sound like thunder.
‘One girl had a panic attack and another had streaming tears, a woman had a heart attack just outside.
‘It’s a lot of teenagers – they’re all in tears.’

Kim Corbett wrote: ‘If anyone needs picking up please let me know. I live in Bury but I’m happy to help any way I can. God bless those hurt tonight.’
Vicky Fraser added: ‘If anybody needs somewhere to stay I will pick them up…can meet them as close as I can get to town.’
There are reports on social media that up to 50 unaccompanied children have been taken in to Manchester Holiday Inn and are being looked after by adults.
Paula Robinson posted on Facebook: ‘We have taken as many kids as we can to Holiday Inn we will keep them safe and stay with them.’
Labour leader Jeremy Corbyn tweeted: ‘Terrible incident in Manchester. My thoughts are with all those affected and our brilliant emergency services.’
Liberal Democrat leader Tim Farron said: ‘This is a shocking and horrific attack targeting children and young people who were simply enjoying a concert.
‘My deepest sympathies are with the victims, and with families who have lost loved ones, as well as those desperately waiting for news.
‘I would like to pay tribute to the bravery and dedication of the emergency services.
‘This is an attack on innocent people and the nation is united both in its grief and its determination to stand up to this deplorable attack.’

He posted later: ‘Confirmed deaths at the Manchester arena. Feel sick to think that people have lost their lives at a gig attended by so many young people.
‘All my thoughts go out to those parents waiting to hear of the safety of their children. It’s a parents worse nightmare. So, so sad.’
A spokesman for Greater Manchester Police said: ‘Emergency services responding to serious incident at Manchester Arena. Avoid the area. More details will follow as soon as available.’
A British Transport Police spokesman said: ‘We are aware of an incident at Manchester Arena. We have officers at the scene and will provide further updates as soon as possible.’
US pop singer Grande was performing her Dangerous Woman European tour at Manchester Arena when the incident happened.
Later this week, she is scheduled to perform in London, followed by concerts in Belgium, Poland and Germany.