The Football Association says security will be stepped up for Saturday's FA Cup final between Chelsea and Arsenal at Wembley Stadium in London.

A FA spokesperson said: "Fan safety is of paramount importance and we have robust security measures in place at Wembley Stadium

"In collaboration with the Metropolitan Police and the local authorities there will be an enhanced security operation for all upcoming events.

"All supporters are encouraged to arrive for events at Wembley Stadium as early as possible for security checks and to avoid any delays in entering the stadium."

The stadium is also hosting Football League play-off finals on Sunday and Monday.

Image source, PA

Bolton Wanderers Football Club has paid tribute to Georgina Callander, the first victim named after the attack.

Georgina played in the club's Under-11s ladies team in 2010 under the management of Jayne Jackson, who still works at Bolton Wanderers Community Trust.

Club chaplain Phil Mason said: "Our thoughts and prayers are with her friends and family during this awful time of loss.

"Georgina and all will be remembered at our annual memorial service tonight.

"There will also be a minute’s silence before the first team ladies' friendly against Wigan Athletic tomorrow evening at Macron Stadium, where the team will wear black armbands."

Image source, Instagram/Georgina.Bethany

Interpol is in "close liaison" with UK police and its National Central Bureau in Manchester.

The world police body has been helping to investigate the attack and coordinate requests from people in other countries worried about relatives in Manchester.

Interpol secretary general Jürgen Stock said: "In a fast moving investigation such as this, the clear flow of information is vital, both for police focusing on their enquiries and for the families and friends trying to establish if their loved ones have been involved.

"Interpol will provide whatever support is required by the UK both now and as their inquiries progress."

More than 50,000 tweets containing the Arabic hashtag for #Manchester have been posted since yesterday evening.

One user, @iQnasSudeer, external, tweeted to condemn "the killing of innocent people in any place".

Another person gave excerpts from the Koran that forbid the killing of any person.

@magdymohamed_, external said “fear and terror of innocent people is a sight that is not acceptable to any community or religion".

Manchester's largest Muslim charity, the Human Appeal, has condemned the "despicable and abhorrent" attack.

Othman Moqbel, CEO of Human Appeal, said: "As a Muslim, as a Mancunian and as a father, I want the victims and their families of last night's attack to know that my prayers, the prayers of everyone at Human Appeal and the prayers of Manchester's Muslim community are with them."

Manchester United manager Jose Mourinho, who is preparing for his side's Europa League final in Stockholm on Wednesday against Ajax, has issued a statement.

"We are all very sad about the tragic events last night; we cannot take out of our minds and our hearts the victims and their families," he said.

"We have a job to do and we will fly to Sweden to do that job. It is a pity we cannot fly with the happiness that we always have before a big game. I know, even during my short time here, that the people of Manchester will pull together as one."

United executive vice-chairman Ed Woodward said a planned staff party in Manchester on Wednesday had been cancelled as a mark of respect.

Image source, Reuters

German footballer Ilkay Gundogan, a midfielder for Manchester City, has called for unity after Monday night's attack.

He posted this message on Twitter.

Trauma specialist, Stacey Hart, a therapist for the child bereavement charity Grief Encounter, offers her advice on how to talk to children and young people about the terror attack affecting Manchester:

• Talk to children in age-appropriate language
• Use phrases they understand but be truthful and use finite language
• Be honest - as they will hear lots on the radio / from friends / school
• Encourage them to ask questions
• Reassure them they are safe and this doesn't happen every day
• Tell them that there are lots of good people in the world too, explain that they will grow up to be a good person and tell them how they can express kindness to anyone who has been affected.
• It's confusing for adults too why bad people do bad things, but it is important to stress that this is a minority, and most people want to help others

Hull is due to host Radio 1's Big Weekend on Saturday and Sunday, with 50,000 people expected to turn up.

A BBC spokesperson said safety was its "primary focus".

They said: "We are carrying out a full assessment, with the police and our partners, of every aspect of the festival."

The Eiffel Tower's lights will be turned off at midnight on Tuesday in homage to victims of the Manchester Arena attack, the Paris mayor has said.

"By targeting Manchester, the terrorists also wanted to attack our shared values, our unflagging attachment to democracy, freedom, humanism and community," Paris Mayor Anne Hidalgo said in a statement.

Image source, AFP

Scotland's First Minister Nicola Sturgeon has said that Police Scotland will review security at all public events in the next fortnight as a result of the Manchester attack.

Making a special statement to the Scottish Parliament, she said it was "heartbreaking" that young people were targeted.

She added that police were supporting the families of two teenage girls from the island of Barra - Eilidh MacLeod and Laura MacIntyre - who have not been heard from since the attack.

Image source, Reuters

Prime Minister Theresa May has arrived at Greater Manchester Police headquarters.

Image source, Getty Images

Image source, PA

A resident who witnessed the controlled explosion which took place earlier today in Fallowfield has described to PA what she saw.

Rosemary Ward, 21, said police sealed off Elsmore Road this morning and conducted the explosion - connected to last night's attack - at about 11.30 BST.

She said: "They were all running out of the house when a big bomb went off.

"That's obviously what it was because the whole house was shaking. Everyone was panicking.

"I heard there was 20 people in that one house. It was scary."

A strike by the RMT - planned for Tuesday 30 May - has been suspended across Merseyrail, Northern Rail and Southern Rail.

Mick Cash, the union's general secretary, said the decision was "in light of the horrific bombing in Manchester last night, and the heightened safety and security alerts on our transport services".

An updated map showing where the 23-year-old man was arrested in relation to the Manchester Arena.