902 A crime scene expert takes pictures of the scene on 7th street in Linden where 3 men tried to hijack a woman after a chase with the police that started in Robindale. 190208. Picture: Bongiwe Mchunu

KwaZulu-Natal - Investigators from Gauteng are en route to the Midlands to look into the causes of the derailment of a train, carrying explosive chemical butane, outside Pietermaritzburg.

Transnet Freight Rail officials said the line between the Napier Junction and Pentrich Station was still closed on Monday after the incident at 6pm on Sunday.

No one was injured in the incident and the gas did not come into contact with the air.

Transnet’s Selby Dlamini confirmed the cause of the accident was unclear, but said that technical experts from Johannesburg had been dispatched to investigate and assess the damage.

“The train driver and his assistant escaped injury.”

According to Wikipedia, butane is a flammable gas.

It is sold in canisters for cooking and camping. Some kinds of butane are used in refrigerators. - Daily News