One of the four people diagnosed with coronavirus in Gauteng is in critical condition.
Gauteng health department spokesperson Kwara Kekana confirmed this on Wednesday, saying further information would be issued later in the day.
The health ministry had earlier announced that a total of 13 people around the country had tested positive for the virus.
In Gauteng, those infected are aged between 33 and 57 and had all traveled outside the country.
The first patient is a 33-year-old woman who returned from Italy on March 1.
Two others are a couple, aged 34 and 33, who traveled to Germany and returned to SA on March 9.
The fourth is a 57-year-old man, who traveled to Austria and Italy. He returned to SA on March 9.
It was not immediately clear which of them was in the critical condition.
This is a developing story.