A "one-eyed" gangster, the No. 2 man in Japan's biggest yakuza crime organization, was convicted of extortion on Friday, winning a high-profile victory for the country's anti-mob police.

Kanagawa Prefectural Police have arrested a YouTuber on suspicion of extortion after he filmed a video of himself capturing a man engaging in voyeurism and attempted to blackmail him for 400,000 yen.