Prior to gaining New Zealand government permission to buy the station, Mr Lauer made a declaration he was of good character, and an "open source" background check was also made of him.
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Ms Horne said the OIO was aware of the new information about Mr Lauer in the media and was "continuing to monitor the situation closely".
Last year, following the allegations that led to Mr Lauer losing his NBC job, the OIO initiated an investigation to consider if enforcement action should be taken for a breach of the condition to remain of good character.
Land Information New Zealand deputy chief executive policy and overseas investment Lisa Barrett said at the end of the investigation, and after legal advice had been taken, the department had "reached the position that we have insufficient evidence at this time to take proceedings against Mr Lauer for breach of the condition".
Ms Barrett said in the course of its inquiries, the OIO had "considered and tested confidential information" supplied by both Mr Lauer and NBC, including NBC's own workplace investigation.
An OIO report stated: "On the basis of the material available to the OIO at this time, there is no evidence that Mr Lauer has engaged in criminal conduct.
"Nor is the OIO aware of a complaint against Mr Lauer having been laid with the police."
It did not consider the evidence it had available established Mr Lauer was unfit to continue to hold the lease of Hunter Valley Station.
This article was first published in the Otago Daily Times.