Six suspected thugs were on Sunday night shot dead in a botched robbery at Sunveat Industries, Thika West.
They were among a gang of 20 and had broken into the factory.
According to Directorate of Criminal Investigations, police were forced to use firearms after the culprits started attacking them with crude weapons.
The same gang had earlier on attempted to invade Prime Value Company where they assaulted one security guard.
Police officers are still looking for those who escaped some with injuries.
“If you see any suspicious person, kindly let us know,” DCI said.