Mathew Kanyamunyu has been sentenced to five years and one month imprisonment.
He entered a plea deal with the Director of Public Prosecutions (DPP) and pleaded guilty to manslaughter.
High Court Judge Steven Mubiru Thursday sentenced him to 5 years and one month in jail.
Meanwhile, his girlfriend Cynthia Munwangari has been set free by the court after the DPP withdrew the charges after against her.
Kanyamunyu, in the company of his girlfriend, Cynthia Munwangari, murdered Kenneth Akena, a children rights activist on November 12, 2016.