The case against Timberlake alleged that he murdered his three-year-old because he believed the child was possessed by aliens living in his stomach.
Former presidential candidate Quincy Timberlake has pleaded guilty to the manslaughter of his son, Sinclair Timberlake.
Australian prosecutors on Tuesday dropped murder charges against Timberlake, who was accused of killing his three-year-old son in 2014. Timberlake is the husband of former television presenter Esther Arunga.