"There is no hostage situation at the moment but it is believed that the incident occurred as a result of rivalry between two groups of churches‚" said police spokesperson captain Mavela Masondo.
Two other people were injured when stones were hurled at their vehicles near the church‚ Netcare 911 spokesperson Shawn Herbst told TimesLIVE.
Masondo told TimesLIVE that several vehicles had been damaged in the incident.
This is a developing story.
Editor's Note: This story is being updated as more details emerge.