The government is ramping up its scrutiny of the controversial Unification Church, launching an investigation into how the organization is run and whether it has violated the law by mediating adoptions among its followers.

The education ministry sent questions on the management and financial status of the Unification Church to the organization on Tuesday, another step toward stripping the group of its "religious corporation" status that brings tax benefits.

“We would like to make clear what the truth is based on evidence and documents, information from relevant sources, as well as the investigation we will conduct,” education minister Keiko Nagaoka said in a news conference earlier in the day.