Man fatally shoots 3 neighbors, wounds a toddler, kills self in seemingly unprovoked attack

October 10, 1999San Francisco, CaliforniaLorenzo Silva (63) shoots three of his upstairs neighbors to death and wounds a toddler before killing himself Around 1:30 p.m., Silva entered his upstairs neighbors’ apartment and shot the occupants. Other neighbors, including Silva’s brother-in-law and mother, heard at least five shots which attracted their attention. Silva’s brother-in-law was hesitant…