The dormitory that provided housing for NGT48's members who are not from Niigata will no longer used.
The group's management moved the members out of the apartment building due to safety concerns. A new building will be used to house those members.
Security systems and patrols had already been announced as measures to ensure safety at the housing complex, but the situation was determined to be more severe than previously thought.
Non-group members had been given access to the old dorm, and in some cases even stayed in individuals' apartment.
Maho Yamaguchi was assaulted by two men when she returned to her dorm on December 8. NGT48 has been steeped in controversy since she revealed the assault against her on January 8.