A truck was set alight in KwaZulu-Natal's Midlands area, allegedly by a farmer who accused the driver of straying onto his farm, police said on Thursday.

"It is alleged that the owner of the farm doused the cab of the truck with the [flammable] liquid and set it alight, causing extensive damages to the truck. He thereafter left the scene," said spokesperson Inspector Joey Jeevan.

Dumisani Zuma was travelling in the Seven Oaks area on Wednesday night when he had to turn to his destination.

"It is believed that whilst turning his truck, he drove over another farmer's property. It is alleged that the owner of the property, who had just arrived at the farm in his vehicle, noticed Zuma driving over his property and confronted him."

During a "heated argument" the farmer removed Zuma's keys from the truck.

"Zuma then climbed out of the truck and an argument between the owner and Zuma ensued, with the owner threatening to burn his truck."

The farmer left, returned with a container of flammable liquid and allegedly set the truck alight.

"It is also believed that he asked the SAPS members performing guard duties to leave his premises before setting the truck alight. Police are investigating the circumstances surrounding the incident."

No arrests have been made. A senior public prosecutor would decide whether charges would be laid.