Three members of the South Korean pop group Tohoshinki will not perform in Japan following the suspension of the all-male band in April, their agent in Japan said Thursday.

Junsu, 23, Jejung, 24, and Yuchun, 24, will not perform in Japan because the head of their South Korean agent has been jailed for improper conduct and because of trouble with their contracts in South Korea, according to Avex Group Holdings.

The group, which debuted in 2004, made their Japan debut the following year, scoring with No. 1 hits "Purple Line" and "Mirotic."