The N3 highway in Durban from the Midmar Dam offramp to Pietermaritzburg has remained closed in both directions.

This is the latest in a series of sporadic protests that are taking place across the province.

Video | KZN Protests: Traffic Congestion on N3 due to protests

It is believed that at least 20 trucks were set alight in the vicinity of the Mooi River Toll Plaza on Friday night.

The KwaZulu-Natal Road Traffic Inspectorate (RTI) has warned motorists to avoid the N3.

RTI officers are diverting motorists at the Midmar Dam offramp to alternate routes.

On Friday, law enforcement officials had their hands full following a series of protests across the province.

KwaZulu-Natal police cannot confirm that the protest action is linked to sentiments from pro-Zuma supporters.

However, some of the protesters say they are angry over former president Jacob Zuma’s arrest.