Brown University shooter Claudio Valente's connection to MIT nuclear science professor Nuno Loureiro, who was murdered at his home in Massachusetts, dates as far back as 30 years, New York Post reported. Valente, 48, killed two and injured others at Brown, before murdering Loureiro two days later. Valente and Loureiro crossed paths between 1995-2000 at Instituto Superior Técnico in Portugal.