From 1999, Disgruntled Ninja Silently Kills 12 Co-Workers:

Sales supervisor Irene Young, whose cubicle was directly across from Tenchumaru’s and who on several occasions had questioned the wisdom of having an office ninja, was the next victim, killed instantly when a single thrust from a razor-sharp ninjato-katana sword pierced her cubicle wall, sheared through her computer monitor, and plunged through her heart.