Last night 22 people were killed and 59 were injured in a suicide bombing at Manchester Arena.
The terrorist attack has been claimed by the Islamic State and details of last night’s victims are beginning to emerge.
The third victim was named as 26-year-old John Atkinson from Bury.
It is said he had been leaving the venue when it was targeted by the suicide bomber.
Friends and family have paid their respects online, describing him as an "amazing young man".
"John was one in a million and loved by so many," wrote Hayley Turk, who organised the fund through website GoFundMe.
"A true gentleman," she added.
"Absolutely heart-broken," wrote a contributor, who gave her name as Kimberley Bowker.
Mr Atkinson's Facebook account has been "memorialised", a process only made possible by verified family members contacting Facebook directly.
One close friend wrote that her "whole body feels numb" after learning the news this morning.
"I am devastated one of our friends lost his life last night in the MEN bomb attack," wrote another.
"We all grew up together and we are heartbroken."
The second victim that has been named is eight-year-old Saffie Roussos.
Saffie was from Leyland.
In a statement released through Lancashire County Council, Tarleton Community Primary School headteacher Chris Upton said: "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.
"The thought that anyone could go out to a concert and not come home is heartbreaking."
It continued: "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."
The schoolgirl had been at the concert with her mother, Lisa Roussos, and sister, Ashlee Bromwich, in her 20s, from Leyland, Lancashire.
They are both now in separate hospitals being treated for injuries, friends said.
Before confirmation of Saffie's death, they posted a Facebook appeal for information about her whereabouts.
The first victim to be named was Georgina Callander, an 18-year-old student at Runshaw College in Leyland.
Georgina was in her second year of a health and social care course.
Two years ago Georgina met Ariana Grande, of whom she was an avid fan.