The 50-km railway line between Tanakpur and Majhola in Uttar Pradesh is being converted into broad gauge. The incident took place due to the negligence of the company engaged in the work, Public Relation Officer of North-Eastern Railway, Izzatnagar division, Rajendra Singh said.
"The gates at over 12 crossing points, through which the coaches passed, were open as the line was closed for work. No one was injured," the spokesperson said.
Six goats and the cow-calf were killed, he said.
He said that railway officials have ordered a probe into the incident.