Insanity Defense: Understanding Christopher Okello's Case

Christopher Okello Onyum’s defense in the brutal killing of four infants at Ggaba Early Childhood Development Centre rests on the complex plea of insanity. Okello did not deny the homicides but claimed a lack of intent, attributing his actions to an “undetected mental illness” despite a prior mental health clearance.

During his trial, Okello described a period of intense distress between January and March, alleging he was under surveillance by individuals making demands and issuing threats. This alleged persecution, he claimed, led him to abandon his home, sleep on the streets, and consider drastic actions, including fleeing the country, attempting bank robberies, and even targeting his brother’s family. He asserted that these external pressures and the influence of those watching him culminated in the tragic events of April 2.

A psychiatric evaluation revealed Okello’s history of schizophrenia, treated between 2016 and 2025, marked by auditory and visual hallucinations. His past includes a prior incident where he killed his own child, reportedly to spare them from suffering, and a suicide attempt in 2023. The psychiatrist noted findings suggestive of recurrent psychotic episodes.

The nature of the killings—senseless, bizarre, and gruesome—coupled with Okello’s apparent lack of remorse and even chuckling during court proceedings, align with characteristics often associated with severe mental disturbances, potentially including psychopathy.

Legally, the defense of insanity requires proving that a “disease of the mind” rendered the accused incapable of understanding the nature of their actions or knowing they were wrong at the time of the offense. This is evaluated under the McNaughten Rule, which necessitates demonstrating a defect of reason caused by mental disease, leading to such a lack of understanding.

Crucially, the law presumes sanity, placing the burden of proof on the defense to establish insanity, not beyond a reasonable doubt, but by a preponderance of probabilities. The court must ascertain if Okello suffered from a relevant mental disease at the time of the murders and if that disease impaired his cognition of his actions and their inherent wrongfulness. This complex legal and psychological interplay will determine the case’s outcome.

Source: Daily Monitor (Uganda)