BREAKING: Shock and sadness for fans as popular YouTube star dies

A YOUTUBE star known as ‘Sir Kipsta’ has died aged 17 after a seven-hour heart operation – as his sister paid a moving tribute to her “angel” today.

Man U super-fan Alex Dragomir posted a tragic last message on Twitter before going into hospital.

Less than 15 hours before his family announced his death, the teen said: “Going in for a life-saving procedure.

“If it don’t work, then it’s been a great time people.

“Thank you for all you’ve done for me.”

But his sister then informed devastated followers he had died as “his heart couldn’t take it any more.”

He lost his life after a seven-hour procedure, she said. Alex has suffered heart problems for some time, and was hospitalised awaiting a transplant.

Posting on his account, she wrote: “Heaven gained another angel.

“He was my rock, my everything.”

Alex regularly updated followers on his condition, and posted videos from his hospital bed to Facebook and YouTube.

On June 5, he thanked followers for their support – and told them: “I’m going to give it my best shot and I won’t let nothing stop me.”

Teachers at his former school, Cockshut Hill in Birmingham, are among those to pay tribute after news of his death was announced – and said the news came as a “great sadness” to them.

“Our thoughts and prayers are with his family and friends at this difficult and sad time,” they said.