Eyewitness describes deadly Marrakesh blast

An explosion has rocked the main square in the Moroccan city of Marrakesh, killing at least 15 people and injuring 20.

Officials say they believe the blast, which tore through the Argana cafe in Djemaa el-Fna square, a popular tourist destination, was "criminal".

Eyewitness, Hugo Somersham-Jones, was at the scene minutes after the explosion.