A 7-year-old boy is being treated in critical condition after an incident at a beach in Essex in which two members of his family died. According to reports, the victims are Sameeha Rahman and Shelina Rahman. After the incident, the surviving child, Musa Ahmed, 7, is flown to hospital for treatment. The reports describe the case as an emergency response involving medical crews and air ambulance services. Police and other responders are understood to be involved in responding to the incident and in establishing the circumstances that led to the deaths and the boy’s injuries. The news accounts focus on the family’s fatalities and the boy’s current condition, with his hospitalisation described as critical. No additional causes or details of what happened at the beach are provided in the supplied summaries.