Jaipur: Four coaches of Churu-Jaipur Holiday Special derailed near Ringus in Rajasthan’s Sikar district today, disrupting the rail movement on the Churu-Jaipur route. However, no passenger was injured as the speed of the passenger train was slow, railway officials said. Reasons for the derailment are yet to be ascertained. A relief train has been rushed to the spot and the work to restore the track has started. Some of the trains have been partially cancelled due to the derailment.