This is an indication of anger from mobs who have no faith in the justice system.
The first incident was reported in Dandora where two suspects were stoned to death by a mob in a botched robbery.
The incident happened on April 19 at night after a brief chase between a gang of five and locals who included bodaboda riders.
Police said they were called and informed of the incident long after it had happened and no arrest has been made so far.
It was established that the deceased persons were part of a group of five suspects who were terrorizing bodaboda operators in the morning within the area of Joy Villa and phase five estate.
Angry members of the public caught up with the two and subjected them to mob injustice while the other three managed to escape, police said.
Police discourage mob lynching and term the trend criminal.
In Kibera slums, a suspected thug was lynched by a mob in a botched robbery.
Police said they were called and visited the scene and found a body that had a deep cut on the back of his head.
It was established that the deceased was attacked by a mob after they realized he was among a group of three who were robbing people within the Lindi area.
The bodies were moved to the mortuary.
Meanwhile, police are investigating the discovery of a body outside the Precious Blood Riruta Girls in Dagorreti.
The deceased was identified as John Maina, 25.
The police want to establish how he died.