The case has intensified scrutiny on a hotel in the Fatih district where the family stayed, as two more guests from the same property were hospitalized with similar symptoms this week.

The deaths have prompted officials to examine multiple potential sources of contamination, including street food the family consumed and the hotel’s hygiene, water and pest-control systems. Police have detained several suspects connected to food outlets and hotel operations as toxicology and laboratory analyses continue.

Hotel sealed as authorities expand investigation

The family, identified in Turkish media as the Böcek family, visited Istanbul on holiday and reportedly ate midye (mussels), kokoreç, lokum and tantuni from various vendors before falling ill. Their symptoms began during their stay in Fatih, and despite medical intervention, the two children died first, followed by their mother. The father remains under treatment.

The hotel where they stayed has been sealed by municipal teams while investigators collect samples and review sanitary compliance. Officials confirmed that two additional tourists staying at the same hotel were admitted to hospital with nausea and vomiting, raising concerns that the case may extend beyond food consumed outside the property.

Police have widened the investigation to include the hotel’s management, nearby food sellers and individuals associated with pest-control services. Authorities are analyzing food remnants, hotel water sources and environmental samples to determine whether the cause is linked to food poisoning, contamination or another toxic exposure.

Multiple suspects detained as lab results pending

Turkish media report that the number of suspects detained has risen to 11, including a midye vendor, a kokoreç seller, a bakery operator near the hotel, the hotel manager and individuals involved in disinfection services. The investigation is being coordinated across public health, municipal and police departments, with findings expected after detailed toxicology tests.

The deaths have raised concerns about tourist safety, food handling and regulatory oversight in one of Istanbul’s busiest districts. Istanbul authorities have emphasized that no cause of death has yet been confirmed and that all scenarios remain under examination until laboratory results are completed.

As investigations continue, officials have urged caution against speculation, noting that both the variety of foods consumed by the family and the hotel environment are being treated as potential sources. Updates are expected as authorities complete their analyses and determine whether the additional hospital cases are connected.

By Vedat Özgür Töre