Three suspected thugs were on Tuesday afternoon killed at the Huruma Round about in Mathare constituency.
The three reportedly snatched a gun from a police officer in Kiamaiko before escaping.
A manhunt launched by area police officers saw them trail the three at the Huruma roundabout eventually killing them.
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Several youths have also been arrested in connection with the incident.
This incident comes barely hours after a police officer was killed by thugs in Kayole and a gun snatched from him.