The tweet read: JohannBotha was shot and killed at a bar in the Maboneng precinct during an armed robbery last night. The owner of the bar also killed.
Botha was well-known for presenting the long-running wildlife show 50/50 on SABC2.
Botha was also a producer on the investigative news programme Carte Blanche and worked on KykNet's Projek Aardwolf.
The police are looking for four suspects, three men and a woman, in connection with the shooting.
South Africans are paying tribute to Botha on social media.
Our sincere condolences to his family, friends and heart sore fans. - 50|50 human nature @5050TV
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