Awwal 24, 1432 H/April 28, 2011, SPA -- At least two French citizens were the up to 18 people killed in a terrorist attack in the Moroccan city of Marrakesh on Thursday, the French daily Le Figaro reported. A Briton was also believed to have been among the victims of the explosion at a cafeteria on a central city square, according to the daily. French media late Thursday reported that six of the dead were French, but there was no official confirmation in Paris. Twenty people were reported injured, some of them seriously. Analysis of the initial evidence confirmed that the explosion was an attack, the causes of which would be investigated, the Moroccan Interior Ministry said. Emergency teams were sent to attend to the injured, who included cafeteria employees as well as clients. The blast occurred in a historic neighbourhood of the city of 900,000 residents, whose Moorish palaces have turned it into one of Morocco's most popular tourist destinations. The Argana cafeteria, which was targeted by the attack, is a tourist magnet.