More than 40 people have been arrested in Sweden following violent skirmishes between police and protesters outraged about a far-right group's intentions to burn copies of the Quran.
Officers fired warning bullets at rioters in Norrkoping on Sunday, injuring three persons, according to police.
A series of protests organised by Danish-Swedish politician Rasmus Paludan provoked the violence.
He claims to have already burnt a copy of Islam's sacred book and intends to do it once again.
Muslims regard the Quran as God's precious message, and any intentional damage or display of disdain for it is considered profoundly disrespectful.
Saudi Arabia has criticised "deliberate misuse of the holy Quran by certain radicals in Sweden, as well as provocation and incitement" in Sweden.