More deaths in Mexico due to freezing weather

Officials in Mexico say more than twenty people are now known to have died during the freak snow storms and freezing temperatures which have hit the country since the weekend.

Climate experts say the low temperatures are expected to continue and officials say they expect the death toll to rise.

Some places in Mexico have seen snow for the first time in more than one hundred years.

The Mexican authorities have opened dozens of shelters for homeless people.

Some experts blame the cold snap on the phenomenon known as El Nino

From the newsroom of the BBC World Service