Mokama (Bihar), Jan 10 (ANI): A massive fire broke out in four coaches of Patna-Mokama passenger express in wee hours of Wednesday. The train was stationed at the Mokama railway station when the fire erupted. The incident occurred at around 1 am, when one of the coaches went up in flames. Soon the fire spread and engulfed four other bogies. The flames were later doused and no casualties were reported.