Police raided the home of the personal physician Leopoldo Luque on Sunday and investigators are looking into all the medical staff involved with his care.
The doctor is being investigated by police about his actions during the final days of Maradona’s life.
Luque was at his home while the search on the outskirts of Buenos Aires took place, while Argentinian TV stations have been broadcasting live images of police entering his clinic.
The searches were ordered after Maradona’s daughters Dalma and Giannina gave statements yesterday and questioned whether the medication their father was receiving was appropriate.
Argentinian media are reporting Luque could be questioned as an ‘imputado’, someone who is under official investigation on suspicion of possible mala praxis or negligence.
Maradona’s lawyer Matias Morla last week demanded a top-level probe into the emergency response to the retired footballer’s death.
Morla said the first ambulance took more than half an hour to reach the rented house north of Buenos Aires where the former Naples and Barcelona star suffered heart failure.
He called the delay a ‘criminal idiocy’ and complained Maradona had not received any medical checks in the 12 hours before he died.
It later emerged the first ambulance took 11 minutes to reach the private San Andres gated estate near Buenos Aires Maradona moved to after leaving hospital on November 11 following his brain blood clot operation.
On Saturday it emerged Maradona’s nurse had admitted she lied about an early-morning check-up.
Initial reports pointed to a 24-year-old nephew who was staying with him at the San Andres home being the last person to see him alive over breakfast the day Diego died.
Maradona was said to have told his relative ‘I’m not feeling well’ before going back to bed and dying in his sleep before investigators were told he had never got up on Wednesday to eat anything.
Diego’s nephew told investigators he last saw him when he went to bed around 11pm on Tuesday. An uneaten late-night sandwich snack was among the items found in his room by police.
A night-shift nurse told investigators he had seen Maradona ‘sleeping and breathing normally in bed’ around 6.30am on Wednesday.
A report in the hands of state prosecutors heading a probe into the retired footballer’s death, leaked to Argentinian media and signed by a nurse named locally as Dahiana Gisela Madrid who took over around the same time, states: ‘At 6.30am I started my shift and the patient was resting.