Good Morning Britain's Piers Morgan and Susanna Reid were almost in tears when they revealed that the 15-year-old schoolgirl Olivia Campbell, whose mother launched an emotional appeal to find her, has died in the deadly Manchester bombing attack on Monday night.

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On Tuesday, Olivia's mother Charlotte Campbell made an emotional appeal on TV to help find her daughter who had gone to attend Ariana Grande's concert and was missing since the attack in Manchester, United Kingdom. Charlotte's appeal had reduced Susanna to tears. Soon after her appeal, several viewers came out in search of her.

But unfortunately, the hosts had to announce the news of Olivia's death on TV, a day after they spoke to her mother.

Manchester attack
Olivia Campbell, a 15-year-old school girl, is one of the victims of Manchester Arena deadly attackFacebook

"This is very sad, we were all yesterday incredibly moved by Charlotte Campbell, the mum who couldn't find her little girl, 15," Piers maintaining his composure said.

"All day we were hoping and praying that she might turn up. Charlotte put a message out today, 'RIP my beautiful princess Olivia, gone far too soon. Never will you be forgotten. I love you.' It's incredibly sad."

Susanna added, "Many of you got in touch yesterday to ask for an update about Olivia and we really hoped to bring you good news. But unfortunately, Charlotte has confirmed that she was killed in the Manchester arena attack. All our thoughts and prayers are with you, Charlotte, today."

Olivia Campbell
Olivia Campbell was at Ariana Grande's concert in Manchester Arena when the deadly attack took placeFacebook

Charlotte also confirmed Olivia's death on Facebook early Wednesday with a heartfelt message. "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," she wrote on Facebook along with a photo of Olivia.

In an interview to Good Morning Britain, Charlotte said she is waiting for a phone call from police to know the whereabouts of her daughter.

Monday's attack in Manchester Arena marks Britain's deadliest attack since July 7, 2005, when 52 people were killed. The attack, which killed 22 people, happened after Ariana's concert ended at Manchester Arena on Monday.