The NSRI was alerted of the 44-year-old man, originally from Johannesburg, around 3.15pm, spokesman Craig Lambinon said.
“Despite extensive CPR efforts the Johannesburg man was declared deceased and his body has been taken into the care of the Forensic Pathology Services and police have opened an inquest docket,” he said.
Two other men, aged 30 and 25, were rescued from the same area. They were originally from Mitchells Plein.
The 30-year-old had near drowning symptoms and was taken to a nearby hospital for further care.