The teenage girl and woman who died in the waters off an Essex beach were trying to help a seven-year-old boy who had got into difficulty, police believe.
Family members identified the pair as Shelina Rahman, a 42-year-old British-Bangladeshi teacher who is married to a Bangladeshi politician, and her 15-year-old daughter, Sameeha. A seven-year-old boy, Musa Ahmed, is on life support in a hospital in London.