Broadcaster News24 cited KwaZulu-Natal emergency medical services spokesman Robert McKenzie as saying heavy rain may have been to blame for the collapse on Thursday night in Dlangubo.
The report said the collapse at the Pentecostal churchoccurred as an Easter season service was under way.
Mr McKenzie said six people were seriously injured.
#SABCNews #sabckzn Disaster management team has been dispatched to the Dlangubo area of eMpangeni on the north coast of KwaZulu-Natal where 13 congregants of the Pentecostal church were killed last night.— Nonkululeko Hlophe (@Leko3) April 19, 2019
Pic credit: supplied pic.twitter.com/tnHNAiAXEZ
Officials are on their way to the scene.
Stay up to date with the latest news stories from a Christian perspective. Sign up to our daily newsletter and receive more stories like this straight to your inbox every morning.