The jail authorities released Krishna Singh, who is a prime accused in his wife's murder case filed last year, and not his father Madan Singh, who was granted bail by a court in the same case yesterday.
Realising the mistake, jail officials swung into action and caught Krishna Singh from Salmari police station area eight hours later and released Madan Singh, the sources said.
An embarrassed District Magistrate Prakash Kumar promised stringent action against those responsible.
