Not fully confirmed yet, but I see news of this in semireputable sources like the Sun and the Daily Mail. He had brain surgery earlier this month.
www.dailymail.co.uk
Diego Maradona has died at the age of 60 after suffering a cardiac arrest, according to reports in his native Argentina.
The football legend had a heart attack at his home just two weeks after leaving hospital where he underwent surgery on a blot clot in his brain.

'I feel sick': Football legend Maradona dies of heart attack aged 60
The Argentinian football legend, 60, suffered a heart attack at home on Wednesday just two weeks after he was released from hospital following surgery for a bleed on his brain.