Disruptive demonstrations have continued in KwaZulu-Natal for the third consecutive night.

The N3 Toll Concession says authorities have shut the route again, to all traffic, between Harrismith and Cedara in the interests of safety.

This after more violent demonstrations flared up at Bruntville. Over 20 trucks were torched at Mooi River, this past weekend.

In Durban, eThekwini Municipality's suspended its municipal bus service on Monday, in response to the civil unrest.

It says residents in and around the city can also expect other service delivery interruptions over the next few days - as staff continue to exercise caution.

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Violent acts and the looting of stores have been reported since scattered protests, following Zuma's jailing last week, broke out in KZN on Friday. They've since spread to Gauteng.

President Ramaphosa, who's extended the Covid-19 level 4 lockdown by 14 days, told the nation last night that destructive and disruptive behaviour cannot be justified.

"It is a matter of concern to all South Africans that some of these acts of violence are based on ethnic mobilisation.

"This must be condemned by all South Africans at all costs as we are a nation committed to non-racialism and non-tribalism that is underpinned by the diversity and unity of all the people of South Africa, whatever their language, culture, religious beliefs and race."

He's urged people to stop sharing unverified images and videos of protest action.

"We also condemn attempts to create confusion by sharing false images and videos, often from events that took place many years ago.

"I ask that you think carefully before sharing anything on social media or elsewhere that may not be accurate or verified.

"The vast majority of this country's citizens have shown that they want to live in peace and harmony."