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MIAMI (CBSMiami) – The names of the 22 people killed in last night’s Manchester terror attack are beginning to surface and many of them are children and teens.

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People who saw Saffie Roussos at the concert Monday night say the 8-year-old was wearing an Ariana Grande T-shirt when she died.

Roussos mother and sister are among the wounded.

Eighteen-year-old Georgina Callander was also killed when the bomb went off. The college student was said to be a super fan of the singer and even took some photos with her a few years ago.

In Manchester and across the U.K., there is anger and disbelief that a terrorist took aim at the community’s youngest and most vulnerable.

“These were children, young people and their families that those responsible chose to terrorize and kill. This was an evil act,” said Greater Manchester Mayor Andy Burnham.

British authorities say 12 children under the age of 16 are among 59 taken to hospitals.

Charlotte Campbell found out tonight that her 15-year-old daughter Olivia died in the blast.

On her Facebook page she posted:

“RIP my darling precious gorgeous girl Olivia Campbell taken far far too soon go sing with the angels and keep smiling mummy loves you so much.”

Officials said 59 victims were hospitalized – some reportedly paralyzed by shrapnel.

“Once we exited the door, there was blood across the floor,” said an attendee.

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Karen Ford was inside with her 13-year-old daughter when the bomb went off. She said her husband panicked when he could not find them in the aftermath.

“For about 10 minutes we were trying to look for each other… they thought we were dead,” said Ford.

The bomber had come to the concert venue from a Manchester neighborhood a few miles away, where police stormed into a house Tuesday.

The Sun newspaper printed what it said was a photo of the alleged attacker. Police identified him as 22-year-old Salman Abedi, a college student born in Britain to parents from Libya.

A 23-year-old man was also arrested.

Britain’s prime minister raised the nation’s terror threat to the highest level of critical.

“This means that their assessment is not only that an attack remains highly likely, but that a further attack may be imminent,” said Theresa May.

Britain is deploying military personnel to boost security at key sites.

In London, Queen Elizabeth and Prince Phillip stood for a moment of silence. The Queen released a statement saying, “the whole nation has been shocked by the death and injury.”

The people of Manchester laid flowers and lit candles at a makeshift memorial for the victims of unimaginable terror.

Meanwhile, displays of solidarity around the world.

In Paris, the Eiffel tower went dark. It was the same at Rome’s Colosseum and New York’s Empire State Building.

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Grande tweeted about the tragedy Monday night.  She wrote, “broken, from the bottom of my heart I am so, so sorry. I don’t have words.”