PATNA, Feb. 27 -- Deputy chief minister cum revenue and land reforms department minister, Vijay Kumar Sinha on Thursday informed the assembly that a probe is underway to ascertain how key documents related to land records had been removed from the revenue department. He said at least five per cent of original crucial land documents were removed from the official records of the revenue and land reforms department by claiming that the land mafia were seemingly involved in it. The minister also admitted that names of original owners of plots have been 'deliberately changed' in certain cases. "It's a matter of serious concern. These documents have been removed or stolen from the records with an ulterior motive by individuals with vested interests. Available inputs suggest the involvement of the land mafia and officials. At least five per cent of crucial documents are missing from the records," he said. Sinha also said that the names of the original owners of plots were "deliberately changed" in certain cases. "Even in certain cases, names of the original owners of the land were deliberately changed in some areas by people with vested interests. The state government will certainly recover missing documents, and those responsible for it will be published," he said. The department has launched a drive to identify the culprits, including government officials, and strict action will be taken against them, said Sinha who also holds the revenue and land reforms portfolio....