South Africa's President Ramaphosa condemns 'anti-foreigner violence'

South Africa's President Cyril Ramaphosa has condemned a wave of looting and violence mostly targeting nationals of other African countries.

"There can be no justification for any South African to attack people from other countries," he said on Tuesday.

Dozens of people were arrested in Johannesburg on Monday. At least five people have been killed in the unrest.

Other African governments have issued warnings to their citizens over the violence.

Attacks on businesses run by "foreign nationals is something totally unacceptable, something that we cannot allow to happen in South Africa," Mr Ramaphosa said in a video posted to Twitter.

"I want it to stop immediately," he added.