Turns out the retrofitted sprinkler system....was only a PARTIAL SYSTEM!!! Once again....PARTIAL PROTECTION IS NEVER EFFECTIVE (on a date or in a system...) This fire killed 3 people and injured 6, including 3 firefighters. From the article:
Investigators said Weaver confessed to setting the fire in Dr. Robert Caprioti's fifth-floor office. She told detectives she set the fire because she feared losing her job because she had not completed paperwork for an accreditation audit that was due the next day.
The sprinkler system did not extend into the offices, which allowed the fire to gain strength before spreading, arson investigators said.
Weaver probably did not intend to kill anyone with the fire and did not expect the fire to get out of control, authorities said.