Wu said that according to the Nikkei, a joint task force consisting of the Cyber Special Investigation Unit of the National Police Agency and police departments from 9 prefectures including Saitama Prefecture arrested 26-year-old Yuta Kobayashi, who is suspected of committing fraud by using others' credit cards and laundering money through the abuse of Monero, with losses exceeding 100 million yen (approximately 666,000 USD). This is the first time in Japan that suspects have been identified through the analysis of Monero. Kobayashi is believed to be the leader of the criminal group, which conducted about 900 fraud transactions between June 2021 and January 2022. The police have arrested 18 people involved in anonymous criminal activities conducted through social media and encrypted communication tools.