A railway contractor was on Wednesday shot dead by unidentified miscreants at the Railway Siding under Patratu police station of Ramgarh district, a senior police officer said. The victim, Omprakash Singh, on his way for some work when the miscreants opened fire at him, said Superintendent of Police M Tamilvanan. A critically injured Singh, who received three bullet injuries, was immediately rushed to the Railway Hospital but the doctors declared him brought dead, he said. Tamilvanan said the incident was a sequel to gang war between two rival groups engaged in maintaining their supremacy in the area. The Police have launched a hunt to apprehend the culprits, who managed to escape after committing the crime, he added.