Protests of the Muslims continued and clashes have taken place yet again across several Swedish cities following threats to burn the Holy Quran by a far-right group.

Iran PressEurope: Local media reported three people were injured in the eastern city of Norrkoping after police were forced to fire warning shots at rioters.

Several vehicles were also set on fire and up to 17 people were arrested following clashes with police, the BBC reports. Unrest sparked on Thursday following the threat and continued on both Friday and Saturday in the cities of Stockholm, Linköping, and Norrkoping.

Paludan had threatened to hold an event in Norrkoping on Sunday but did not show up after claiming Swedish authorities could not “protect themselves or me” on his Facebook page.

Video also emerged of protesters throwing stones at police and rioters burning cars in Orebro. At least 16 police officers were injured over the three days, while several vehicles were set alight in the southern city of Malmo on Saturday.

Counter groups also clashed with Stram Kurs, where approximately 100 people threw stones and set cars on fire in Landskrona.

Sweden’s national police chief, Anders Thornberg said he had never seen such violence before.

He said: “We have seen violent riots before. But this is something else.”

Iran and Iraqi governments both summoned Swedish envoys to protest against the desecration of the noble book.