A Southern Railway release said the goods train carrying fertilisers to Kottayam derailed last night and traffic between Kollam and Kayamkulam stations has been regulated on a single line.
Though no express train has been cancelled,few passenger services have been regulated for the speedy restoration work of the affected line, the release said.
Few long-distance trains coming to Thiruvananthapuram and towards Ernakulam were detained at nearby stations due to the accident.