(MENAFN - Morocco World News) Rabat - Violent clashes between Sub-Saharan migrants and a group of Moroccans broke out on Friday night near Ouled Ziane bus station in Casablanca, according to many media reports. A number of videos posted on YouTube and Facebook show scenes of the clashes, which have required the intervention of the Moroccan police. The cause of these clashes are still unclear. There are two conflicting versions of the causes of the incident. According to a source cited by Moroccan news website, Hespress, the clashes occurred after a group of Sub-Saharan migrants caused a fire in a park near the bus station, which they have been using as their shelter. But according to the testimonies of eyewitnesses quoted by the same source, the clashes broke out when the members of a Moroccan family attacked the Sub-Saharan migrants sheltered in the park after they had a fight with one of its members."