Among those killed were two Argentine women, a German and a French.
According to the local radio station, seven people have died, including three Cubans and four foreigners, and 33 are injured, including 11 Cubans and 22 foreigners.
UNITED NATIONS - The United Nations on Friday stepped up its battle against starvation in Yemen with a 32-million-U.S. dollar transfer of funds from its Central Emergency Response Fund to the humanitarian relief effort in the war-scarred country.
The crash - which took place at around 8pm on Thursday (3pm local time) - happened in a south-eastern city of Guantánamo, around 1,000 miles away from the capital Havana. The injured were from the U.S., Britian, Canada, France, the Netherlands and Spain. Five people were also left in critical condition from the crash.
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The US prevailed in selecting its preferred candidate over challengers from Nigeria and Colombia, but the process was grueling. The Treasury Department told AFP on Friday that it had no comment in potential candidates.
According to Radio Guantanamo, two Canadians were on the bus - a 56-year-old man and a 54-year-old man, however, the extent of their injuries is not yet known. Their ages range from 42 to 74.
The UK Foreign Office said it was "seeking information from the Cuban authorities" and that it was "ready to assist any British people who require our help", a spokesperson told the BBC.
Viazul operates buses between many large towns on Cuba and is a popular travel choice for tourists on the Caribbean island. This media house does not correct any spelling or grammatical error within press releases and commentaries.