On December 18, 1996, Marcelo Kenji Yoshino, 22,
an employee of the Sao Paulo State Sanitation Company, entered the
offices where he formally worked with a Glock 9 mm pistol hidden in a
Once inside, he looked for the object of his obsessive and
unrequited passion -- co-worker Valeria Lellis -- and opened fire,
killing three women and wounding two men.
Six months previously Yoshino had been transferred to
another unit of the company because of his stalking and harassment of
Valeria. He was also sent to a psychologist, but continued frequenting
his former office to visit her.
On the fateful payback day, Marcelo hunted down
Valeria and fired at ten coworkers killing her, their supervisor, and
another woman, and wounding two men. After the rampage, the obsessive
coworkers shot himself in the head.