At least 42 people died, when a bus plunged 490 feet into a ravine in southern Morocco, 20 others are reported to have been injured, some seriously. The following footage contains graphic material.

The accident happened in a mountainous area in the early hours of Tuesday, as the bus travelled between the cities of Marrakesh and Zagora. The bodies of the dead are wrapped in shrouds. Most of the passengers are believed to be Moroccan. It is not clear, if any foreigners are among the casualties.

The injured were taken to a hospital in Marrakesh and the rest to a nearby hospital, where they are trying to identify the dead and injured.

In a palace statement, King Mohammed VI offered his condolences to families of the victims and said he would pay for their transport, funeral and burial costs.

The cause is not yet known, but an official in Haouz said an inquiry had been launched.

Written and presented by Ann Salter.