The group debuted in 2006 with six members, but Jin Akanishi left the band in 2010 and Tanaka left in 2013.
Music label Natural Ace issued a statement on Thursday regarding the arrest of singer, actor, and former KAT-TUN member Koki Tanaka.
Tanaka also played Gyokuei in Ōoku: Tanjō – Arikoto・Iemitsu Hen, the live-action television adaptation of Fumi Yoshinaga’s Ōoku: The Inner Chambers manga.
The band was scheduled to have an event in Suzuka in Mie prefecture on Friday, and a concert in Yokkaichi on Saturday.