Johannesburg - No one had been arrested for pelting a motorist with stones and setting his car alight during a service delivery protest in Hlohlokwe, Limpopo police said on Tuesday."No arrests have been made," said police spokesperson Moatshe Ngoepe.On Sunday night, a motorist who was unaware of the protest, tried to remove rocks left in the road by protesters in the area, about 57km south of Tzaneen. He was pelted with stones and his car set alight. He and three of his passengers escaped unharmed.A case of public violence and malicious damage to property was opened. "The authorities from municipalities are busy addressing the residents now and we are busy opening the roads," Ngoepe said around 11:30am on Tuesday."We are busy monitoring the situation."