Some of the victims among the 22 who were killed in the attack on the Ariana Grande concert in Manchester have been named.
Among them are parents who were coming to greet their children after the concert and take them safely home, as well as excited youngsters attending their first ever concert.
The youngest victim is eight-years-old.
Here is all we know on the victims of the atrocity.
Martyn Hett, 29, from Stockport, was due to fly to America for a two-month holiday and spent the last few days saying goodbye to friends.
His brother Dan tweeted this morning: "They found my brother last night. We are heartbroken."
It is is believed he was at the Ariana Grande concert with his friend Stuart Aspinall when the pair became separated.
His friend Russell Hayward said on Twitter: "We got the news last night that our wonderful iconic and beautiful Martyn didn't survive.
"He left this world exactly how he lived, centre of attention."
His family said they feared the "worst could have happened" just two days before he was about to embark on a trip of a lifetime to America.
Stepmother Kathryn Hett, 59, said his phone was turned off which left his family "devastated" at the thought of what could have happened to the PR worker.
26-year-old John Atkinson has been confirmed dead by family and friends.
The pop fan, from Radcliffe , was reportedly leaving the venue when he was targeted by the attacker.
A local police force tweeted: "As the news comes in, the sympathies and condolences to the familes of Georgina Callander, Saffie Rose Roussos and John Atkinson #RIP"
Tributes were paid by the local adult dance troupe, Freak Dance Radcliffe, for whom Atkinson danced competitively.
A message on Facebook from the group read: "Today is an amazingly sad day! 'We have lost a member of our dance family."
They described him as a "happy gentle person" and a "real pleasure to teach".
"He was a true friend, not just to our staff but many of the parents and students from the school. Our thoughts are with the family at the very sad and hard time!"
Many have posted their condolences online, saying he was an "amazing young man" and a "beautiful soul".
Lee Paul posted on Facebook: "Sleep tight John Atkinson. Thoughts and prayers with all your family and the other 21 people who lost there lives last night."
Tracey Crolla wrote: "Thinking of all the Atkinsons at this very sad time John Atkinson you turned into an amazing young man so kind and thoughtful you will be missed by everyone x x."
Nana Julie Mills said: "Just heard one of my good friends whom I've known since he was a little boy passed away last night. Condolences to his family and friends. RIP John Atkinson."
Talie Andrea wrote: "Heartbroken for the Atkinson family at this sad time never would I imagine this happening so close to home. Rest in paradise John you beautiful soul."
A GoFundMe has been launched by the local community and it has raised almost £2,000.
Well-wishes wrote: "We are trying to help his family in any way possible at this tragic time. I know all us Radcliffe people can pull together and help this local family out.
"Please donate generously as we all know funeral cost are expensive and will help the family at this sad time! John was one one in a million and loved by so many!! A true gentleman. R.I.P John thoughts and prayers with you family and all of the other victims effected by this tragedy"
Saffie-Rose Roussos died from her injuries at the concert on Monday night.
The headteacher at her school, Chris Upton, said: "Saffie was simply a beautiful little girl in every aspect of the word. She was loved by everyone".
In a statement released this afternoon, Tarleton Community Primary School headteacher, Chris Upton, said the news was "heartbreaking".
"News of Saffie's death in this appalling attack has come as a tremendous shock to all of us and I would like to send our deepest condolences to all of her family and friends," said Upton.
"The thought that anyone could go out to a concert and not come home is heartbreaking."
He added: "Saffie was simply a beautiful little girl in every aspect of the word.
"She was loved by everyone and her warmth and kindness will be remembered fondly.
"Saffie was quiet and unassuming with a creative flair.
"Our focus is now on helping pupils and staff cope with this shocking news and we have called in specialist support from Lancashire County Council to help us do that.
"We are a tight-knit school and wider community and will give each other the support that we need at this difficult time."
Saffie's parents are believed to run a fish and chip shop in Leyland, Lancs.
Saffie-Rose's mother and sister, Lisa and her older sister Ashlee are being treated for shrapnel injuries in separate hospitals.
Kate Tinsley, whose daughter Jessica was a friend of Saffie at Tarleton Community Primary School, near Preston, had earlier told The Sun: "Everybody is worried, the whole village. Everybody is in bits waiting for news, just some news that she's okay, she's alive."
Saffie-Rose was at the concert with her mother Lisa and her older sister Ashlee, who are both reportedly being treated in hospital.
The first named victim of the Manchester terror attack was Georgina Bethany Callander, an 18-year-old Ariana Grande superfan who was excited to see her idol on Monday night.
Ms Callander had met Ariana Grande in 2015, and posted excitedly about the time she met her star on Instagram.
She attended Runshaw college in Lancashire.
The young fan, from Whittle-le-Woods in Lancashire, was one of 22 people killed by the blast as she left the Ariana Grande concert at the 21,000-capacity venue.
Her college confirmed she was dead, telling The Telegraph: "It is with enormous sadness that it appears that one of the people who lost their lives in Monday's Manchester attack was one of our students here at Runshaw College.
"Georgina Callander was a former Bishop Rawstorne pupil studying with us on the second year of her Health and Social Care course.
"Our deepest sympathies, thoughts and prayers go out to all of Georgina's family, friends, and all of those affected by this loss.
"We are offering all available support possible at this tragic time, including counselling with our dedicated student support team."
Friends posted heartbroken messages on social media mourning their friend, who loved pop music and frequently attended concerts and shows.
When she met Ariana Grande two years ago, she wrote: "Thank you for everything my love I miss you."
Before the concert, Ms Callander wrote on Twitter: "SO EXCITED TO SEE YOU TOMORROW."
She knew she was attending the show in 2016, and wrote of how she couldn't wait to hear Ariana Grande sing.
The student was a big fan of music and film, and has posted many proud pictures of herself meeting her idols on social media.
Marcin and Angelika Klis, Polish parents of a student at the University of York, have been confirmed dead after the Manchester attack.
Marcin was 42-years-old, and Angelika was 40, and they both were at the concert to pick up their children.
Their 20-year-old daughter had posted a plea for help on Facebook after they didn't contact her following the attack at the Ariana Grande concert on Monday night.
The Polish foreign minister has confirmed that a couple from the country had died in the attack.
They had arranged to meet their children at the entrance were the attack occurred to take them to their home in York.
The pair leave behind two daughters, Alex and Patricia.
A woman from Sheffield's family have confirmed she is one of the victims of the Manchester terror attack after her body reportedly "shielded" her niece from the blast. She leaves behind a young daughter, Phoebe.
Kelly Brewster, 32, had been reported missing after the suicide bombing at Manchester Arena on Monday night.
Her partner, Ian Winslow, later wrote on Facebook: "Not sure how this works but it isn't good news. Kelly Brewster wasn't one of the unidentified hospital patients. She has sadly passed away in the terror attack yesterday.
"Kelly really was the happiest she has ever been and we had so many things planned together. My daughter Phoebe will be absolutely devastated like we all are."
Her local paper, the Sheffield Star, praised her for her bravery on the front page of the newspaper after confirming her death.
It said that she will be remembered by her community for her selfless act.
Ms Brewster had been attending the Ariana Grande concert with her sister Claire and her niece Hollie Booth when the home-made device packed with nuts and bolts exploded in the venue's foyer as thousands of young people were leaving.
Hollie has two broken legs and Claire has a broken jaw, Hollie's grandmother Tracy Booth wrote on Facebook.
Olivia Campbell, a 15-year-old, was killed in the Manchester terror attack, her mother said on Tuesday night.
Campbell's mother, Charlotte Campbell, paid tribute to her daughter on Facebook.
She said: "RIP my darling precious gorgeous girl Olivia Campbell taken far far to soon go sing with the angels and keep smiling mummy loves you so much."
A heartbroken Mrs Campbell had broken down in tears on ITV's Good Morning Britain earlier in the day, when her daughter was missing.
She spoke of how she had not spoken to her daughter Olivia since she set off for the event.
"All I know is she was at the Manchester Arena with her friend watching Ariana Grande and she's not turned up yet.
Two mothers waiting to collect their teenage daughters after the Ariana Grande concert were among the victims of the suicide attack at the Manchester Arena, their families said on Tuesday night.
Alison Howe, 45, and Lisa Lees, 47, from Royton, Oldham, were waiting together in the foyer of the arena when a home-made device packed with nuts and bolts exploded.
Both had been reported missing after the attack and on Tuesday night their relatives confirmed they were among the 22 victims of the atrocity.
"They took a caring beautiful mum and step mother away from us all she was amazing to us all x love you loads Alison Howe xx," Ms Howe's stepson Jordan Howe wrote on Facebook.
Ms Lees' brother, Lee Hunter, confirmed her death around the same time.
"For those who don't know Lisa is gone but never, ever forgotten. I love you Lisa I'll miss you so much," he wrote.
- With Daily Mail
Two dead and dozens injured after car drives into German Christmas market.