The fire at a prison in Honduras on Tuesday night is now thought to be the world's worst prison fire in a century.
A death toll of 355 inmates has been confirmed. Most were burned alive or asphyxiated in their locked cells at the National Prison in Comayagua.
Lorries have taken the bodies to a mortuary in the capital, Tegucigalpa, about 80km away.
The BBC reports 115 corpses were taken to the capital on Wednesday night and a further 238 on Thursday morning. Two prisoners died in hospital.
AFP reports the coffins were donated by relatives of the dead.
The government has promised a full investigation into the tragedy. It says the entire prison system needs reform.
But the BBC says similar promises were made in 2004 when a fire at a prison in San Pedro Sula left 107 inmates dead.