Far-right group Soldiers of Odin targeted a Muslim school in a Stockholm suburb following allegations that the school had segregated its children by gender on the bus.
The Al Azharschool in Vällingby told newspaper Stockholm Direkt that members of the anti-immigrant vigilante group had put up propaganda stickers in the schoolyard and filmed some of their pupils.
"They started filming children in the schoolyard and then they kicked a football away from some guys. When I saw them they were at the entrance and were putting up their stickers and then I called the police," said Vice Principal Jane Almquist.
Police said they had checked the identity of the Soldiers of Odin members but said they were not arrested because no crime had been committed, reports Stockholm Direkt. Instead, the school has now called in its own security guards, but said some children had chosen to stay at home on Thursday out of fear.