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Shocking footage captured the moment a train burst into flames.
Terrified passengers can be seen hurtling from the service at West Malling railway station as sparks fly from the blaze underneath.
The train and the platform were evacuated this afternoon as thick smoke billowed from the carriage.
Those travelling this evening were warned to expect disruption until 8.30pm.
It meant lines between Swanley and Ashford International were blocked.
Footage captured by eyewitnesses shows sparks flying from the blaze underneath the carriage.
Passengers can be seen running to safety as they evacuate the service.
A fire service spokesman confirmed crews were called shortly after 4pm to West Malling railway station in Station Approach following reports of a fire underneath a train carriage.
"Five fire engines and a foam unit were sent to the scene, where crews used dry powder to extinguish a small fire," they said.
"The incident has since been reduced to two fire engines.
"The train and surrounding area were evacuated as a precaution, but no injuries were reported.
"People travelling on the affected railway line are likely to experience delays. Please follow Southeastern railway for any travel updates."
Trains were unable to run between Otford and Maidstone East.
However, an update by Southeastern shortly before 8pm said the train had been cleared and Network Rail staff were inspecting the line.
The 7.55pm from Victoria to Ashford was planned to run as normal via Maidstone East.
The 7.27pm Ashford to Victoria is running normally.
A limited shuttle service was running between Maidstone East and Ashford – and services diverted via Paddock Wood or cancelled.
Southeastern said earlier power to the track on both lines had been switched off for safety.
A spokesman for the firm said: "We've been advised of a fire onboard a train at West Malling.
"The power to the track on both lines has been switched off for safety.
"Response staff are onsite and the passengers have been evacuated off the train.
"The fire has been extinguished but at present, the train cannot move and is blocking the line, maintenance staff are investigating."