The family were travelling from Machynlleth, where they had been on holiday A man has been bailed by police after a collision in which a woman lost her mother, husband and two foster children when their car plunged into a Powys reservoir.
Police said two cars collided on the B4518 at the Llyn Clywedog reservoir near Llanidloes on Wednesday, and one had entered the water.
A woman from Pontypridd escaped from the car, but her family died.
A local man was arrested on suspicion of causing death by dangerous driving.
Police said the family had been travelling from Machynlleth, where they had been on holiday.
The bodies were recovered with the help of the fire service, a diving team and RAF helicopters.
The car remains in the water, and specialist recovery is required.
Police said the two cars that collided were travelling in the same direction on the B road which skirts the reservoir, and one car plunged over a 20ft (six metre) bank into 30 ft (nine metres) of water.
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