A 28-year-old Greek heiress was found dead in her London flat on Sept. 11 after family members say she was turned away from two hospitals following what they allege began as an insect bite.

Marissa Laimou, also known as Lemos, was discovered lifeless in bed by her housekeeper, her family told Greek media. Relatives said she had developed dizziness, itching, fever and other signs of infection three days earlier and that a visiting doctor initially prescribed paracetamol when called to her home.

Family members said Laimou subsequently saw her oncologist at a London hospital — she had recently undergone treatment for breast cancer — and was transferred by ambulance to a second hospital. They said nurses, rather than doctors, examined her there and concluded she did not need admission. She was reportedly discharged in the early evening with antibiotics and a diagnosis referring to an insect bite.

The following day she was found dead. Laimou’s mother, Bessy, told Greek media that toxic shock caused by an insect bite killed her daughter, saying, “My daughter had survived cancer and died from an insect.” The family has not publicly identified the type of insect involved, and authorities have not confirmed the cause of death.

An autopsy had not been completed as of the family’s statements; relatives said they would await the post-mortem for definitive answers. The hospital involved has reportedly acknowledged a serious mistake and opened an internal investigation, according to the family’s account in the media.

Friends described Laimou as talented and devoted to the arts. She had recently staged a production of Romeo and Juliet in London and was preparing another theatre project. Before moving into arts production, she worked in Paris with designers including Sonia Rykiel and John Galliano and founded Rainbow Wave, a company that introduced international brands to London stores.

The Laimos family is a well-known name in Greek shipping, with business roots stretching back to the early 20th century. Relatives and acquaintances said her death has drawn an outpouring of grief among friends, colleagues and members of the arts community.

Officials and medical spokespeople had not released public statements addressing the family’s account or the specifics of the hospital’s inquiry. Local coroner’s and hospital procedures typically require a post-mortem to determine cause of death in cases involving unexpected deaths and recent medical contact, and such inquiries can take several days to weeks.

Investigations into care, triage decisions and causes of sepsis or toxic shock generally examine clinical notes, staff interviews and timing of treatment. The family has urged a full accounting and said it will await the results of the post-mortem and any formal inquiries before commenting further.

As of the latest reports, no criminal charges or formal regulatory findings have been announced in connection with Laimou’s death. Authorities have not released further details about the circumstances surrounding the incident pending the outcome of medical and internal hospital reviews.