In another jailbreak incident, five convicts, including four serving life imprisonment, escaped from the Buxar Central Jail late last night by scaling the prison wall.
District Magistrate Raman Kumar said today that the jailbreak took place between 12 midnight and 3 AM.
Iron road, pipe and 'dhoti' have been found at the spot from where the prisoners scaled the wall, he said.
Superintendent of Police Upendra Sharma said those who escaped included Prajit Singh hailing from Motihari, Girdhari Rai of Chapra, Sonu Pandey and Upendra Sah of Ara, all four serving life imprisonment and Sonu Singh of Brahampur, Buxar, convicted for 10 years.
The DM said that after probing the incident, responsibility would be fixed on the erring jail officials for the jail break.
The SP admitted that security has been breached and said thick fog must have helped them in escaping.
This is the third major prison escape this year.
On November 27, Khalistan Liberation Force terrorist (KLF) Harminder Singh Mintoo had escaped from Punjab's Nabha Jail along with five others.
On October 30, eight SIMI operatives escaped from Bhopal Central Jail. They were later gunned down in an encounter by the state police.