Brown U. janitor says he warned campus security about suspicious gunman twice in weeks leading up to mass shooting

A Brown University custodian spotted depraved gunman Claudio Neves Valente pacing school hallways and peering into classrooms nearly dozen times in the weeks before his mass shooting —  and  alerted campus security twice about the suspicious figure, a new report said. Derek Lisi, who has worked at the elite school for 15 years, told the...