Disgruntled parishioners set fire to five houses in a village in the Tshilwavhusiku area of Limpopo this week, police said.
Police spokesman Brig Motlafela Mojapelo said residents of Ravele village had complained about previous murders in the area.
Mojapelo said police arrested 15 suspects between the ages of 18 and 41 on Wednesday for arson.
They are expected to appear in Tshilwavhusiku District Court soon. < / p>