The announcement also stated that drummer Takahiro Koizumi and guitarist Hayato Koga will leave the group, after the agency terminated their contracts.
The agency and Koizumi decided after talks that Koizumi would leave the band, and decided to cancel his contract.
Rock band KANA-BOON announced on Monday that the band will halt their activities for the rest of the year.
The announcement on KANA-BOON’s website references a report that the agency had investigated from a few days ago.