The cause of death was an “acute secondary lung edema to exacerbated chronic heart failure,” the source said.
Heart failure is a chronic condition that gradually damages the heart’s ability to pump blood. Fluid can build up in the lungs as a result — a condition known as pulmonary edema. It is an increasingly common problem that can be fatal.
The Argentine Football Association confirmed Maradona’s death on Wednesday and posted a short message on its social media platforms.
Regarded as one of the greatest players in the history of the game, Maradona became a household name after inspiring his country to World Cup glory in 1986.
He took center stage at the tournament with a memorable performance against England where he scored an iconic goal that he later described as the “Hand of God.”
The diminutive forward out-jumped legendary keeper Peter Shilton and punched the ball into the net. Despite the obvious handball, the goal was allowed to stand because the referee did not see the foul.
Later in the game he scored one of the best goals in history after weaving his way past seven English defenders.
His glittering career was also marked by numerous controversies and his notorious lifestyle led to alcoholism and addiction.
Argentina’s President Alberto Fernandez announced three days of national mourning for the passing of the superstar, and posted a tribute to Maradona on Twitter.
Maradona will lie in honor for public viewing at Argentina’s presidential palace, Casa Rosada, according to a statement published by the country’s official news agency, Telam.
Fans took to the streets across Argentina and in Naples on Wednesday to pay tribute to their hero.
Meanwhile, UEFA president Aleksander Čeferin said a minute’s silence would be observed ahead of all European matches this week in honor of the Argentine.
“He will go down in history as someone who set football alight and thrilled fans young and old with his brilliance and skill,” Čeferin said in a statement.
Maradona’s lawyer Matias Morla earlier told CNN that the star had died of cardiac arrest. Maradona’s family has authorized an autopsy to determine the official cause and manner of death, according to a source close to the soccer star. The official autopsy results have yet to be released.
Life off the pitch
Maradona broke into professional soccer with Boca Juniors but went on to play for leading European clubs such as Barcelona and Napoli.
He won two Serie A titles with the Italian side which tweeted “Forever. Goodbye Diego” along with a blue heart.
When Maradona joined Napoli, one newsreader remarked, “the poorest city in Italy buys the most expensive player in the world.”
While his performances on the pitch dazzled, Maradona faced a number of demons off it.
During his time in Italy, he came into contact with the Camorra — the Neapolitan mafia — and struggled with addiction. He failed a drug test in 1991 and received a 15-month ban from the game.
A nomadic managerial career followed his playing years, taking him from Argentina to Mexico and the United Arab Emirates. Most recently, he coached Gimnasia y Esgrima in Argentina.
Earlier this month, Maradona underwent successful surgery for a subdural hematoma — more commonly known as a blood clot on the brain.
Soccer world reacts
Tributes have flooded in with former clubs and players past and present paying their respects.
Fellow Argentine Lionel Messi, whom many saw as the modern-day Maradona, said it was a “very sad day.”
“He leaves us but he doesn’t go anywhere because Diego is eternal. I keep all the beautiful moments lived with him and I wanted to send my condolences and best wishes to all of his friends and family,” Messi wrote on Instagram.
Meanwhile, Juventus star Cristiano Ronaldo said goodbye to an “eternal genius.”
FIFA President Gianni Infantino called Maradona “simply immense” and said “he deserves our eternal gratitude.”
“Our silence, our tears, our pain is the only thing we are feeling deep inside us at this time,” he said.
While his influence on soccer will never be forgotten, Maradona transcended the sport.
A Vatican spokesman said Pope Francis “looks back with affection to the occasions of encounter in recent years and remembers it in prayer, as he has done in recent days since he learned of his health conditions.”
This story has been updated.
Juan Pablo Varsky, Matias Grez, Aleks Klosok, Claudia Dominguez, Tatiana Arias and Ignacio Grimaldi contributed reporting.