Police in Argentina have searched the house and private clinic of Leopoldo Luque, the doctors of Diego Maradona who died on Wednesday of a heart attack.

The football legend's demise came two weeks after he was discharged from a hospital in Buenos Aires following brain surgery.

Now, authorities are trying to establish if there was any case of negligence in his treatment.

The investigation comes after Maradona's daughters demanded to know what medication their father had been put on.

According to Argentine news television channel TN, the prosecutor's office is also still waiting for results of toxicological tests conducted on Maradona's body.

Earlier, Maradona's lawyer Matias Morla had called for a probe into claims that ambulances took more than half an hour to reach the football star's house in response to an emergency call on the day of his death.