A mother has become the fourth member of a British family to die in a suspected carbon monoxide poisoning while on a visit to Bangladesh.
Hosne Ara Islam, 46, died in hospital three months after her family were struck down in the mystery poisoning.
Taxi driver Rafiqul Islam, 51, and son Mahiqul, 16, were found dead the next morning in their holiday apartment while daughter Samira Islam, 20, died in hospital 11 days later.
The family of five travelled from Riverside, Cardiff, to visit relatives in the Sylhet region of Bangladesh before the tragedy.
Police say they were found collapsed after a family meal on July 25 - with tests being carried out over a suspicion of poisoning.
The following day relatives tried to open the door to the flat and called police who found five unconscious victims inside.
Son Sadiqul, 24, is the only survivor after being released from hospital.
Police said Sadiqul had told them there was a faulty electricity generator in the property which was to be used in emergencies.
It was confirmed by the police that the family came to Bangladesh on July 12 and the cause of the poisoning is expected to be carbon monoxide.
Supt Farid Uddin said officers had visited the property with Hosne and Sadiqul, adding the generator pumped out smoke as it was running, which could have led to suffocation.
He said: "We collected a smoke sample from the generator and we sent it to fire service to see if chemicals were also found in the bodies of the deceased and of the survivors. We have to wait for some days to get the chemical analysis report."
Police also said that the family had fallen asleep in the same room on Monday, July 25, and found the bodies the next day after breaking into the flat.
Hosne's death was confirmed by the Cardiff Bangladeshi Society.
