'Idol' winner's brother dies, aged 37

The older brother of American Idol winner David Cook has died of cancer, reports People.

Speaking at yesterday's Race For Hope event in Washington DC to benefit brain cancer research, the singer announced that his 37-year-old sibling had passed away on Saturday.

"I actually lost my brother yesterday to a brain tumour and I couldn't imagine being anywhere else right now," he told the crowd.

Cook had battled the illness throughout his younger brother's time on Idol but had still supported him in the audience during his performances.

In a statement, Idol judge Simon Cowell said: "I was incredibly saddened to hear the news. I met Adam Cook a few times...he was an incredible guy, and right now my thoughts are with David and his family."

Paula Abdul added: "Adam Cook was a part of our extended American Idol family who supported his brother wholeheartedly, even through his own fight. My heart goes out not only to David, but his family as well."

Last month, Cook apologised to fans after cancelling two concerts due to "family matters". His representative later confirmed that he had been spending time with his brother.