Police identified Claudio Manuel Neves-Valente, a 48-year-old Portuguese former physics graduate student at Brown, following a mass shooting in the Barus and Holley Engineering Building that killed undergraduates Ella Cook and Mukhammad Aziz Umurzokov and wounded nine others.Brown University announced an independent review of its emergency protocols amid student and faculty criticism that officials’ five-day silence after the attack fueled confusion and falsehoods.