Terrorist attack
The police and armed forces in South Africa announced on Friday that security would be reinforced this weekend following an alert launched by the US embassy in Pretoria last Wednesday.
The alert warned of a possible attack this Saturday in a suburb north of Johannesburg.
South Africa hosts four major events this weekend including the coronation of King MisuZulu Zulu in Durban, an event attended by President Cyril Ramaphosa.
Johannesburg hosts a gay pride event, there is also a rugby match in Pretoria and the football derby in Soweto.
Nigeria's capital, Abuja,is also under a security alert. Since Sunday that the embassies of the United States, Britain, Australia and Canada have been alerting to the "high" probability of an attack in the capital.
On Friday, the Nigerian government said it had beefed up security and called for the public to remain vigilant but calm.
Government troops are fighting jihadist insurgents mostly in the northeast, though there are small cells in other parts of the country.
01:02
Pics of the day: July 25, 2024
01:19
Sudan: Paramilitary leader says he will attend ceasefire talks in Switzerland
Go to video
At least 26 villagers killed in latest violent attack in central Mali
02:31
Cholera outbreak: Medical experts, government move to curb spread
01:00
Pics of the day: July 19, 2024
11:10
Morocco under Mohammed VI : A model of African progress? [Business Africa]