A defense lawyer involved in the case around the death in Argentina last year of football star Diego Maradona slammed what he called a "trial by media" on Monday after the leak of a report last week alleged "deficient and reckless" behavior by the footballer's medical team.

Maradona, the revered former Boca Juniors and Napoli star who had battled alcohol and drug addiction for many years, died last November from heart failure after undergoing brain surgery earlier that month.

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According to the report, a medical board formally appointed to investigate his death concluded that several members of his medical team acted in an "inappropriate, deficient and reckless manner," and said he was not properly monitored before he died.

That report, shared with Reuters and other media outlets last week, is due to be presented to prosecutors in Buenos Aires on Monday.

No charges have yet been brought in the case and the lawyer for Maradona's psychiatrist said selective leaking was undermining the legal process.

"The evidence that was leaked, as well as the audios and witness testimony, the extracts, including edited audios and chats, involve less than half of the defendants, is not that striking?" Vadim Mischanchuk told reporters.

"It would seem there is an intention to produce a trial by media, a trial prior to the delivery of justice, and that is not good at all."

Maradona's death rocked the South American nation, prompting a period of mourning and angry finger pointing about who was to blame.

A lawyer for Maradona's son Dieguito said the report showed "criminal conduct" in the case, adding he would press for full accountability.