PARIS — As many as 200 migrants clashed near the northern French port city of Calais, using sticks and iron bars in five brawls that mainly pitted Afghans against Eritreans, the authorities said Tuesday.

A total of 21 migrants and six police officers were injured, none seriously, during the clashes that broke out between Monday night and Tuesday afternoon, the Pas-de-Calais prefecture said.

As many as 150 migrants were involved in the last fight, which started on a road leading out of the center of Calais and moved to a highway, the prefecture said.

Four other fights began late Monday and continued until dawn as the police dispersed the groups with tear gas.