Hungarian police fired tear gas as hundreds of migrants broke through the razor wire fence along the Hungary-Serbia border.
The migrants chanted “Allahu Akbar” while pelting officers with bricks and rocks, causing police to respond with water cannon and tear gas.
Hungary closed the border earlier this week after being inundated with record numbers of migrants moving up through Serbia. The country has become a stopping point on the route of one the greatest movements of people in history.
The migrants are mostly arriving in Europe through Greece before travelling through Macedonia and Serbia and entering Hungary, from where they travel on to Austria and Germany.