South African police have arrested two women and a man in connection with the killing of a woman whose body was found last week in Ekurhuleni, east of Johannesburg. The arrests come amid anger over the killings of nine women in their 20s and 30s in the municipality during the past two months. Six victims were found within 10 days, while four bodies were discovered within roughly six kilometers of one another. The deaths have raised fears of a possible serial killer, although authorities have not established that the cases are connected. Authorities have identified similarities among some cases and warned women in Ekurhuleni to take precautions. Investigators have not linked the suspects to the other eight killings.