A man known only as "John" is being hailed as a hero after posting information on Reddit that helped solve the Brown University mass shooting.
NBC News reported that "John" began making posts on Reddit about a strange encounter he had with the suspected gunman, who turned out to be Claudio Manuel Neves Valente, on the day of the shooting that killed two students and injured nine. "John" was able to provide key information related to Valente's vehicle.
