Hurricane Ernesto leaves hundreds of thousands without power in Puerto Rico

La Plata river floods a road after Tropical Storm Ernesto passed through Toa Baja, Puerto Rico (Alejandro Granadillo/AP/PA)

Hurricane Ernesto moved towards Bermuda on Thursday after leaving hundreds of thousands of people in Puerto Rico without power or water as sweltering heat enveloped the US territory.

A hurricane warning was in effect for Bermuda, with Ernesto expected to pass near or over the island on Saturday.