A knifeman who viciously stabbed a rail user in the neck after he bumped into him at a subway station in the French city of Lyon has been arrested. A relative of the attacker is said to have reported him to the police having recognised him when a video of the horrific assault went viral online. The disturbing act took place shortly after another man accidentally stumbled into him. They appeared to share a brief exchange before the attacker chases after the stranger and pulled out a knife. He then casually walked away, while the victim placed his hand on the wound and looked around in confusion - seemingly unaware he had just been stabbed. Read more at DailyMail.com #france #attack #subway #scary #victim #arrest #cops