Two suspected thugs were shot and killed in separate attempted robberies in Limuru and Nairobi.
Police said they recovered weapons from the suspects and that some escaped the shooting drama.
The first incident happened in Limuru outside an apartment, police said.
Police said a team was patrolling in the Marieta area on Saturday night when they found a gang trying to break into Lesley Apartment.
According to police, they were challenged to surrender but one of them drew a pistol and aimed at the officers, which prompted the officers to fire back fatally injuring him as the other two managed to escape to an unknown destination.
Police said they recovered a toy pistol and a panga that had been secured on the left side of his waist.
The body was taken to the city mortuary awaiting identification and postmortem examination.
In the California area, Nairobi, a pillion passenger was shot and killed while his rider was arrested in a robbery incident.
Police said the two had been robbing mobile phones from pedestrians along First Avenue prompting the victims to raise an alarm.
The pillion passenger was shot and killed as the rider lost control and landed on the pavement.