Overview

• The referral covers roughly 55 to 57 youths on suspicion of joint dangerous acts under the road-traffic law, according to police announcements reported by multiple outlets.
• Around 12:45–12:47 a.m. on June 9, 2024, about 37 motorcycles allegedly weaved, turned in intersections, and ran red lights on roads near Makuhari Messe.
• Asahi reports 20 of those referred also face unlicensed-driving allegations, while Chunichi puts the figure at 22.
• Investigators say an 18-year-old interior worker from Ichikawa organized the ride via social media as a 'birthday touring' event that drew participants from Chiba, Saitama, Gunma, and Tokyo.
• Some of the youths told police they became excited while riding and that it was their first time in a group of that size.