The National Joint Operational and Intelligence Structure (NATJOINTS) said it will enforce a lockdown around the FNB Stadium and Nasrec Expo Centre.
This forms part of the South African Police Service's (SAPS's) security measures for the G20 Leaders' Summit, which is hosted in South Africa.
The G20 Leaders' Summit is the main event where the heads of state from the G20 countries gather.
The G20 Summit will be hosted at the Nasrec Expo Centre in Johannesburg from 22 to 23 November 2025. It is the first-ever G20 Leaders' Summit held in Africa.
The G20 Summit in South Africa made headlines after a few prominent world leaders announced they would not attend.
United States President Donald Trump said no official U.S. Government representatives will attend the G20 Leaders' Summit.
The United States President said it was "a total disgrace that the G20 Summit will be held in South Africa".
Other top leaders, including China's President Xi Jinping, Argentina's President Javier Milei, and Mexico's President Claudia Sheinbaum Pardo, will also not attend.
Russia's President Vladimir Putin, who is restricted from attending due to the International Criminal Court (ICC) arrest warrant, will also not be there.
Although these top leaders will not be attending the G20 Summit, many other prominent leaders will be present at the event.
They include French President Emmanuel Macron, Indian Prime Minister Narendra Modi, and Japanese Prime Minister Sanae Takaichi.
South Africa will also host Italy's Prime Minister Giorgia Meloni, the United Kingdom's Prime Minister Keir Starmer, and Canada's Prime Minister Mark Carney.
German Chancellor Friedrich Merz, Brazilian President Luiz Inácio Lula da Silva, and Australian Prime Minister Anthony Albanese will also be there.
These high-profile leaders require exceptional security, which the National Joint Operational and Intelligence Structure said was in place.
The National Joint Operational and Intelligence Structure shared information about the security measures around the G20 leaders' summit.
They said the area around the FNB Stadium and Nasrec Expo Centre will be a 'strictly no-fly zone' to manned aircraft and drones.
Lieutenant General Tebello Mosikili advised Johannesburg residents that there will be limited access in areas surrounding Nasrec Expo Centre and FNB Stadium.
"We confirm that from Friday, 21 November until Monday, 24 November 2025, we will be implementing a hard lockdown," she said.
This hard lockdown will apply to the vicinity of the FNB Stadium, which houses the accreditation centre, and the Nasrec Expo conference centre.
The hard lockdown means that individuals who do not have a valid accreditation to be in and around the Nasrec Expo Centre will not be allowed near this vicinity.
"All vehicles in this vicinity will be inspected thoroughly before being allowed to enter any premises," Mosikili said.
"The Road Traffic Management Cooperation, RTMC, and the Metro Police Departments have already apprised communities of the affected road closures."
The routes already affected in Johannesburg include parts of major roads, including the N1, N3, N12, R21, R24, and M1.
She added that the roads used by convoys will be closed off and the movement of road users, pedestrians, cyclists, and motorists will be limited.
"Roads will be opened as soon as the convoys move past the affected routes," Mosikili said during the media briefing.
"We urge members of the public to take note of these identified route road closures and to cooperate with law enforcement authorities."