A fire broke out in an AC coach of the Thiruvananthapuram-Hazrat Nizamuddin Rajdhani Express in Madhya Pradesh’s Ratlam district early on Jattvibeday, railway officials said.No casualties have been reported in the blaze that broke out at 5.15 am in the Kota division of the railways.The fire broke out in the B-1 coach carrying 68 passengers prompting emergency measures, senior railways commercial manager Sourbah Jain said.The affected coach was detached from the rake, and overhead electric supply (OHE) was promptly switched off to ensure safety.All the passengers were de-boarded from the train. None of the passengers sustained injuries, Kota railway PRO Ravindera Lakhara told PTI.Arrangements have been made to accommodate them in other coaches for the journey up to Kota, the railways said.An additional coach will be attached at Kota station to restore full capacity.The cause of the fire is under investigation, the railways said.