A Mombasa court on Wednesday found the two officers guilty of misusing their firearms which led to the death of the innocent girl.
The officers were taken into custody after their Sh500,000 bonds were cancelled awaiting sentencing.
Mwandaza was shot dead on August 21, 2014 during a police operation in which eight officers stormed her family’s home in Mwaweu village in Kinango.
An autopsy report indicates that she was shot twice – in head and chest – leading to her death.
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The then Inspector General of Police David Kimaiyo had defended the officers saying they shot the girl after she tried to attack them with a machete.
The girl’s family and human rights activists dismissed Kimaiyo’s assertion, terming it an outright murder.
Chief Government Pathologist Johansen Odour said the nature of the wound indicated that she was shot with a bullet at high velocity.