A group of armed robbers raided Kivaywa Secondary School in Kakamega County, western Kenya, on Wednesday night.
The thugs killed three security guards during the raid and left two others injured.
The deceased are Edward Malala, 40; Henry Khaoya, 55; and Evans Wanyonyi, 56; while Situma Sitikho and Luca Wanjala are sustained injuries.
During the raid, the burglars made off a TV set, one laptop, a public address system, and some cash.
Police have launched an investigation into the matter.