BUENOS AIRES • Argentinian football icon Diego Maradona received inadequate medical care and was left to his fate for a "prolonged, agonising period" before he died last year, an expert medical panel concluded on Friday.

In a 70-page document, the panel stated that Maradona, who succumbed to a heart attack on Nov 25 at the age of 60, "started to die at least 12 hours before" the moment he was found dead in his bed.

He died just weeks after undergoing brain surgery on a blood clot.

A panel of 20 experts was convened by Argentina's public prosecutor to examine the cause of death and to determine if there had been any negligence.

Maradona's neurosurgeon Leopoldo Luque, psychiatrist Agustina Cosachov and psychologist Carlos Diaz are under investigation as well as that of two nurses, a nursing coordinator and a medical coordinator.

The finding could result in a case of wrongful death, and a prison sentence of up to 15 years if convicted.

The legal proceedings were prompted by a complaint filed by two of Maradona's five daughters against Luque, whom they blamed for their father's deteriorating condition after the brain operation.

Maradona had surgery on Nov 3, just four days after he celebrated his 60th birthday. He appeared to be in poor health then, and had trouble speaking.

The World Cup winner had battled cocaine and alcohol addictions. He was suffering from liver, kidney and cardiovascular disorders when he died and his daughters have accused Luque of responsibility in his deteriorating health.

The panel concluded that Maradona "would have had a better chance of survival" with adequate treatment in an appropriate medical facility.

He died in his bed in a rented house in an exclusive Buenos Aires neighbourhood, where he was receiving home care.

He did not have "full use of his mental faculties" and should not have been left to decide where he would be treated, the experts said.

They also found that his treatment was rife with "deficiencies and irregularities" and the medical team had left his survival "to fate".

Sebastian Sanchi, a former spokesman for Maradona, said "it is clear that the panel says that things were not done right".

AGENCE FRANCE-PRESSE