A MAN has been arrested in connection with the bombing at a concert in Manchester, police have confirmed.

Twenty-two people, including children, are now known to have been killed and 59 injured in the attack at Manchester Arena.

Police are treating it as a "terrorist incident".

The Islamic State terror group has claimed responsibility for the attack.

Greater Manchester Police tweeted this just before midday:

A crowdfunding page has been set up to support families of those killed and injured in the attack, with more than £77,000 raised so far. Visit http://www.justgiving.com/crowdfunding/westandtogethermanchester

Politicians and police in North Yorkshire have taken to social media to share their thoughts with the victims and families affected by the suspected terror attack at a concert in Manchester.

York Central Labour candidate Rachael Maskell tweeted:

Archbishop of York Dr John Sentamu also shared his thoughts on Twitter:

North Yorkshire Police has also tweeted: 

The force's control room tweeted a message of solidarity to their fellow officers in Manchester:

Rev Jane Nattrass, priest in charge of York's city centre churches, said: "We are all stunned by the news of the events in Manchester. 

"Our thoughts and prayers are for those who have died, those who have been injured, those who are dealing with the aftermath, and their families and friends. A candle is lit in the courtyard at St Martin Coney Street, York, to remember all those affected by the tragic events."

There will be a vigil at noon on Friday in St Martin Coney Street church. People are invited to gather for a short service at which they will be able to light a candle and pray for peace.

A suicide bomber deliberately chose the place where he could cause "maximum carnage" when he detonated a bomb at a pop concert in Manchester, the Prime Minister has said.

Theresa May said "many" children and young people were among the 22 dead and 59 injured in the attack.

She confirmed that police and security services believe they know the identity of the man responsible and are now working to establish whether he was acting alone or as part of a group.

Speaking outside Downing Street after chairing a meeting of the Government's Cobra emergency committee, Mrs May condemned the "cowardice" of the attacker and hailed those who rushed to help, who had shown "the spirit of Britain ... a spirit that through years of conflict and terrorism has never been broken and will never be broken".

Witnesses reported hearing a "huge bomb-like bang" at around 10.30pm on Monday, as fans were leaving the arena shortly after a show by Ariana Grande finished, and described glass and metal nuts on the floor.

Grande, the US singer who finished performing minutes before the blast, said she had been left "broken" by the events.

Greater Manchester Police Chief Constable Ian Hopkins said: “This has been the most horrific incident we have had to face in Greater Manchester and one that we all hoped we would never see.

"We have been treating this as a terrorist incident and we believe, at this stage, the attack last night was conducted by one man. The priority is to establish whether he was acting alone or as part of a network.

"The attacker, I can confirm, died at the arena. We believe the attacker was carrying an improvised explosive device which he detonated causing this atrocity."

Gary Walker, from Leeds, was with his wife in the foyer waiting to pick up his two daughters who were at the concert.

"I was waiting for the kids to come out. We heard the last song, and quite a few people were flooding out and then suddenly there was a massive flash and then a bang, smoke," he told BBC Radio 5 Live.

"I felt a bit of pain in my foot and my leg. My wife said, 'I need to lie down'. I lay her down, she'd got a stomach wound and possibly a broken leg.

"I was about three metres from the actual explosion. I am surprised I got away so lightly."

Mr Walker said the explosion was by the door in the foyer, next to the merchandise, and that glass and metal nuts were left on the floor.

He said he lay down next to his wife for up to an hour, until she was stretchered on a table to an ambulance.

His daughter Abigail, who was still in the auditorium with sister Sophie at the time of the explosion, said: "I had to make sure I had my sister. I grabbed hold of her and pulled hard. Everyone was running and crying.

"We were just trying to figure where everyone was. It was absolutely terrifying."

Abigail and Sophie contacted their parents by mobile phone, a moment Mr Walker described as "fantastic news".

One fan, Majid Khan, 22, described the explosion and ensuing panic.

"A huge bomb-like bang went off that hugely panicked everyone and we were all trying to flee the arena," he said.

"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."

The area around the arena was swamped with police and emergency services and approach roads were closed.

Manchester's Victoria station, which backs on to the arena, was evacuated and all trains and trams cancelled.

Grande, who was unhurt in the incident, later tweeted: "broken. from the bottom of my heart, i am so so sorry. i don't have words."

The National Crime Agency and the National Police Chiefs Council have urged the public to send any photos from the event to a special website set up to help police with their investigation.

If you have images from the event, upload them securely here: https://ukpoliceimageappeal.co.uk/CSIPS_Public/upload/choose

An emergency number was established for those concerned about loved ones - 0161 856 9400.