Gauteng rocked by quake
Johannesburg - A 4.6 magnitude earthquake hit Johannesburg in the early hours of Friday morning, the US Geological Survey said on its website.
The Council for Geoscience later said the quake was 3.8 magnitude, and not 4.6 as estimated by the US Geological Survey.
"It's the same event. The USGS measurement is done by a machine, and the stations they use are not in as close proximity to the quake as ours, and that's why it's different," council seismology unit manager Michelle Grobbelaar said.
The quake, which happened around 01:00, is the second in South Africa in less than three weeks.
It occurred 12km west of Orange Farm, a township south of Johannesburg.
On 5 August, a 31-year-old man was killed in a mining village near Orkney, North West when the 5.5 magnitude earthquake struck the region.
At least 34 miners were injured by the earthquake, and more than 600 houses were damaged.