Law enforcement officials say an anonymous tipster known only as “John” helped crack the case of two Brown University students' deaths and the wounding of nine others. The tipster's information led police to identify Claudio Neves Valente as the suspect. Subscribe: http://smarturl.it/AssociatedPress Read more: https://apnews.com​ This video may be available for archive licensing via https://newsroom.ap.org/home