GETTY A mass brawl erupted in a refugee camp in Dunkirk

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The violence between undocumented migrants took place in the Grande-Synthe refugee camp, which is home to more than 1,500 paperless migrants, including Iraqi Kurds, Syrians and Persians, on Friday night. Police didn’t know why the attack took place but hinted an argument between “rival migrant gangs” could have “sparked” the fight.

TWITTER Tweet regarding suspicion of gun fire and knife attack at the refugee camp

Four migrants who lived at the camp have been arrested and taken in to custody for questioning. The five victims were rushed to hospital with “minor injuries,” and are expected to make a “full recovery,” police added.