The Finance Ministry on Thursday released to the Diet two internal documents related to a controversial 2016 land sale to Osaka-based school operator Moritomo Gakuen, but refused to confirm if it has other versions of the records — further enraging opposition parties.

The documents, which were hundreds of pages long and had been held at the ministry's Kinki Bureau, are identical to those previously released to lawmakers.

The Asahi Shimbun has reported that the two documents were secretly altered by ministry officials and that the latest versions leave out key information on the deal, which involved state-owned land being sold at an eye-popping 86-percent discount.