Mazonakis Death: What Happened Before His Collapse? New Questions Over Midazolam and Propofol

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New testimony and phone calls at the Kolonaki clinic are putting the focus on the drugs allegedly administered to Giorgos Mazonakis before he lost consciousness

The investigation into the death of Greek singer Giorgos Mazonakis is increasingly focusing on what happened inside a medical clinic in Kolonaki during the critical minutes before he collapsed.

Authorities are examining reports that Mazonakis was given medication for sedation before undergoing plasma exchange, including the benzodiazepine midazolam and the reversal agent Anexate, also known as flumazenil.

At the same time, testimony from a nurse has raised questions about whether propofol may also have been discussed or administered.

The exact substances, quantities and timing remain subject to investigation, with toxicological and histological examinations expected to provide important evidence.

Questions over midazolam and Anexate

According to information being examined by investigators, Mazonakis was allegedly given midazolam before the plasma exchange procedure.

Midazolam is a benzodiazepine commonly used for sedation and anxiety relief.

Investigators are also examining information suggesting that Anexate, the brand name for flumazenil, was administered.

Flumazenil can reverse the sedative effects of benzodiazepines such as midazolam.

The presence of Anexate is therefore considered relevant to the investigation, although it does not by itself establish exactly which drugs were administered or why.

Those questions will need to be assessed alongside medical records, witness testimony and laboratory results.

Why propofol is also under investigation

Another issue concerns references to propofol during the emergency at the clinic.

According to testimony reportedly given to investigators, a member of staff said she heard the words “sedation” and “propofol” during the critical period.

Propofol is a powerful intravenous anaesthetic and sedative used to induce and maintain anaesthesia or provide deep sedation.

Unlike benzodiazepines such as midazolam, propofol does not have a specific reversal agent.

Investigators are therefore examining different possibilities, including whether midazolam alone was used or whether more than one sedative was involved.

The reference to propofol in testimony does not, on its own, establish that the drug was administered to Mazonakis.

The nurse’s two phone calls

Particular attention is being paid to two phone calls made by a 56 year old nurse at the clinic after 4pm.

The nurse reportedly told investigators that the first call took place at around 4:10pm to 4:15pm after a doctor allegedly asked her to find out whether an antidote existed for propofol.

She reportedly contacted an anaesthetist, who told her that there was no specific antidote for propofol.

The information was then passed back to the doctors at the clinic, according to her testimony.

The second call reportedly concerned the clinic’s defibrillator, with the nurse saying the device was not functioning and that instructions were sought about its use.

The testimony is now being examined alongside other evidence collected during the investigation.

“Everything was going well until four”

The nurse reportedly told investigators that everything appeared to be proceeding normally until around 4pm.

“Until four everything was going well,” she said, according to her testimony.

She described a sudden change in the atmosphere, with tension and panic developing after that point.

The nurse said she was in a neighbouring room with another patient and therefore did not see everything that was happening in the room where Mazonakis was being treated.

She also told investigators that she had seen the singer the previous day during a hydrotherapy session.

According to her account, he appeared different from previous occasions and seemed to have something on his mind.

She further stated that sedation was not normally part of the treatment process being carried out at the clinic.

Questions over the reported arrival time

The nurse also reportedly gave investigators information about what happened after Mazonakis died.

According to her testimony, she was allegedly instructed to give a different account of the singer’s arrival time at the clinic.

She reportedly claimed that she was told to say Mazonakis had arrived at around 3pm to 3:30pm, despite saying that he had actually arrived at around 2pm.

Her account is now part of the wider investigation into the timeline of events.

The nurse also described activity inside the clinic after the ambulance service left, including resetting the treatment area and returning the defibrillator to its position.

She said one catheter remained in place, while she did not know what happened to the second.

The timeline under investigation

Mazonakis visited the clinic on Karneadou Street in Kolonaki on September 9, 2026.

Investigators are examining evidence showing that he had undergone hydrotherapy the previous day before being scheduled for plasma exchange.

According to the information under examination, he was connected to the plasma exchange machine at approximately 2:14pm.

The machine reportedly recorded an initial alert at 2:25pm, while blood circulation through the system began at around 2:37pm.

At approximately 2:44pm and 2:45pm, a doctor reportedly took photographs of Mazonakis while he was unconscious. One of the images was allegedly sent to an associate.

The machine reportedly stopped at around 3:22pm.

Investigators are also examining evidence indicating that Mazonakis remained connected to the machine for approximately another 23 minutes.

Further alerts were reportedly recorded at around 3:45pm, followed by attempts to restore the situation.

The precise sequence of events remains a central part of the investigation.

The hypnotherapist connection

Investigators are also examining the role of hypnotherapist Nasos Komianos, who had reportedly been in contact with Mazonakis before the singer’s visit to the clinic.

According to information being examined, Mazonakis had initially considered travelling to London for treatment before eventually turning to the Kolonaki clinic.

The singer and Komianos reportedly came into contact through an associate, after which communication was established with the doctor.

Messages between Komianos and the doctor before Mazonakis visited the clinic have also reportedly come under scrutiny.

Family seeks toxicology results

Mazonakis’ family has called for toxicological examinations to be expedited so investigators can establish what substances were present in his body and determine their possible role in his death.

Family lawyer Charalambos Lykoudis has reportedly raised questions about aspects of the nurse’s testimony, arguing that some elements appear to correspond with the defence position of one of the doctors.

He has also indicated that the investigation could lead to additional individuals being examined or to further offences being considered.

For now, investigators are awaiting the results of toxicological and histological testing, which could provide crucial evidence about the medication administered to Mazonakis and the events that preceded his collapse.

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