Japanese police arrest diners accused of 'sushi terrorism,' after videos of pranksters licking soy sauce bottles and rubbing saliva on conveyor-belt food goes viral

• Japanese police arrested three diners accused of "sushi terrorism." 
• Unhygienic pranks in Japan's conveyor belt sushi restaurants have become a viral sensation. 
• The pranks have forced some restaurants to close their sushi conveyors. 

Japanese police have arrested three people accused of "sushi terrorism," as a wave of unhygienic sushi conveyor belt pranks sweeps social media.