Investigation continues into the death of singer Giorgos Mazonakis

Singer Giorgos Mazonakis died on September 9, 2026, after suffering a cardiac arrest during a plasmapheresis procedure at a private clinic in Kolonaki, Athens. Following his death, two doctors associated with the facility were arrested and are currently being held at Korydallos prison, facing charges of intentional homicide with possible malice by omission. The clinic, which operated under the name Stem Cell, is under intense scrutiny as authorities investigate its patient list, financial transactions, and medical practices.

Investigations have widened to include an extensive network of professional contacts, with police working to recover deleted digital data from seized devices. Authorities are analyzing a potentially incriminating message allegedly sent by a staff member suggesting the singer was sedated during the procedure. Additionally, an investigation into a broader circle of medical professionals linked to the clinic is ongoing. A hypnotherapist involved in the case is scheduled to testify before an investigator to clarify his communication with the doctors.

While the autopsy performed on September 11 failed to determine a specific cause of death, toxicology reports are pending. The Athens Medical Association stated that no formal complaints had been filed against the clinic since its licensing in 2013, despite recent allegations. The incarcerated doctors remain under high surveillance and have been permitted to meet briefly under strict conditions.