24-year-old Shingo Nakano (Blue Sandars) and a 31-year-old female dental assistant were arrested by Fukuoka police (east division) on the 25th and face charges of extortion.
According to the report, between August 2009 and April 2011, the two suspects threatened to have a 32-year-old male victim beaten by a gang if he didn't provide them money. In all, the suspects met with the victim about 90 times and received around 610,000 yen.
The victim finally decided he didn't want to pay the suspects any more money and approached police in May.
The two suspects are denying that they threatened the victim.
The Hyogo Blue Sandars posted a notice on their website on the 25th apologizing for the commotion. They are also announced that they decided to release Nakano.