Authorities have updated that the gunman who attacked both Brown university and murdered another physics professor in a 2nd attack is 48 year old Claudio Neves Valenti, a Portugese national who killed himself when surrounded today during the manhunt.
His vehicle was at both shooting sites, and he was a student at Brown
anything beyond that for motive is up to the internet to figure out at the moment, but I think it reasonably defies most preconceived archetypes