The National Consumer Affairs Center is urging buyers to immediately stop using certain folding bicycles from U.S. manufacturer Dahon after safety tests revealed a potential risk of the bike's frame breaking during use.

The warning follows an incident reported in May 2023, involving a man in his 40s who was injured in Nagano Prefecture the previous month. The aluminum frame of his Dahon Horize Disc Shimano Altus 8-speed folding bicycle broke while he was riding, causing him to fall. He sustained severe injuries, including a lacerated chin requiring five stitches and broken teeth.

The model was produced in China and 734 vehicles were shipped to Japan from August 2021 until January of this year by Akibo, the bike's importer.