According to the NPA, between March 2022 and September 2023, 14 individuals in their 30s to 80s across five Japanese prefectures -- Gifu, Kagawa, Oita, Nagasaki and Okinawa -- were defrauded of a total of 150 million yen. Victims were contacted via platforms like Facebook by individuals posing as military personnel or doctors. These scammers later communicated through the Line messaging app, claiming they wanted to send luggage to Japan for marriage purposes, and requested money for customs fees. Additionally, there were cases of social media-based investment fraud cases where scammers impersonated celebrities to lure victims into investing. The NPA's National Cyber Department traced the defrauded funds, which had been converted into cryptocurrency, and found that at least about 56 million yen (around $372,000) was linked to bank accounts belonging to 13 individuals in Nigeria.