Court upholds 30-year sentences for men convicted in 2016 murder case

One youth leader, Shem Shefa Ongache, was murdered on February 14, 2016, with multiple panga wounds; two men remain imprisoned serving 30-year sentences.
Last seen alive with the appellants, never seen alive again
The court's reasoning for why circumstantial evidence was sufficient to convict the two men of murder.

On Valentine's Day 2016, a youth leader named Shem Shefa Ongache walked out of a bar in Rongo town with two men and was found dead moments later, his body bearing deep panga wounds. A decade on, Kenya's Court of Appeal has affirmed that justice need not rest on a single eyewitness — that the weight of circumstance, proximity, and physical evidence can speak for the dead. The ruling not only seals the fate of Abern Mbija Agumba and Jared Otieno Mbija, each sentenced to thirty years, but quietly reaffirms a broader truth: that the law, at its most careful, can reconstruct what no one was present to see.

  • A man left a bar alive in the company of two others and was found hacked to death within minutes — yet no witness saw the moment of killing, leaving the entire case to be built from shadows and physical traces.
  • The defence struck at every link in the evidentiary chain: no fingerprints on the panga, a DNA order issued by an officer of insufficient rank, broken custody records, and key witnesses who were never called to testify.
  • Prosecutors held firm, pointing to blood-stained clothing on both men, a panga still in hand during flight, DNA matching the victim, and a witness who watched one appellant physically block the bar door while the body lay outside.
  • Three appellate judges in Kisumu invoked the 'last seen' doctrine, ruling that the tight timeline between Ongache leaving the bar and his body being discovered, combined with the forensic evidence, shifted the burden squarely onto the accused.
  • With mandatory death sentences already struck down by Kenya's Supreme Court, the 30-year terms were upheld as a measured exercise of judicial discretion — serious enough to reflect the gravity of the crime, lawful enough to withstand scrutiny.

On the evening of February 14, 2016, Shem Shefa Ongache was drinking at Stage Park Bar in Rongo town when he left with two men — Abern Mbija Agumba and Jared Otieno Mbija. Within minutes, his body was found behind a bus, cut by multiple panga wounds. No one witnessed the killing itself. Yet on June 19, 2026, a three-judge panel in Kisumu ruled that the circumstantial evidence was enough, and the men's 30-year sentences would stand.

A bar patron, Michael Okumu, had watched Ongache drinking cordially with Agumba before the group left. Shortly after, as word of a killing spread, Agumba blocked Okumu at the door, claiming they were dealing with a thief already reported to police. Meanwhile, boda-boda riders chased the second appellant toward a government office — and caught him still holding a blood-stained panga. Forensic analysis confirmed the blood on the weapon and on both men's clothing matched Ongache's DNA.

The defence challenged nearly every piece of evidence: the panga was never fingerprinted, the DNA collection order came from an officer of insufficient rank, the chain of custody for the clothing was incomplete, and the riders who made the apprehension were never called to testify. The prosecution maintained that the exhibits were lawfully obtained and that witness testimony was credible and consistent.

The judges applied Kenya's 'last seen' doctrine — when an accused is the last known person with a victim who then turns up dead, the burden shifts to them to explain what happened. Given the narrow window between Ongache leaving the bar and the discovery of his body, and the weight of physical evidence, the court found the doctrine safely applied. Both men had been represented throughout, had cross-examined witnesses, and received full disclosure — no fair trial violation was found.

On sentencing, the court noted that while death remains the maximum penalty for murder, Kenya's Supreme Court has ruled mandatory death sentences unconstitutional, requiring judges to exercise discretion. The 30-year terms were found neither unlawful nor disproportionate. The ruling closes a decade-long chapter and reinforces how Kenyan courts can sustain murder convictions on circumstantial evidence alone — when the logic, as the judges put it, is tight enough.

On the evening of February 14, 2016, a youth leader named Shem Shefa Ongache was drinking at a bar in Rongo town when he left in the company of two men. Within minutes, he was dead—his body discovered behind a bus with deep panga wounds across his head and body. No one saw the killing happen. But on June 19, 2026, a panel of three judges in Kisumu affirmed that the two men who left with him that night, Abern Mbija Agumba and Jared Otieno Mbija, were guilty of his murder, and their 30-year prison sentences would stand.

The case rested almost entirely on circumstantial evidence. A patron named Michael Okumu had watched Ongache drinking cordially with Agumba inside Stage Park Bar. When the two men left, Mbija followed close behind. Moments later, word spread through the bar that someone had been killed. Okumu rushed toward the door but was stopped by Agumba, who pushed him back inside and told him they were dealing with a thief—a case, he said, already reported to police. By then, Ongache was already dead.

What followed was a chase. Boda-boda riders pursued the second appellant as he fled toward the Deputy County Commissioner's office. When they caught him, he was still holding a blood-stained panga. Forensic analysis would later confirm that the blood on the weapon and on both men's clothing matched the dead man's DNA. The appellants' legal team argued the conviction was unsafe. No witness had actually seen the killing, they contended. The panga was never dusted for fingerprints. DNA sampling had been ordered by a police constable below the rank authorized under the Penal Code. The chain of custody for the bloodstained clothes was broken because no inventory had been prepared. Crucial witnesses—the boda-boda riders who had chased and apprehended the second appellant—were never called to testify.

The prosecution countered that the exhibits were lawfully obtained and properly analyzed, and that witness testimony was credible and consistent in placing both men at the scene. The three judges—Milton Asike-Makhandia, Chacha Mwita, and Byram Ongaya—agreed. They invoked what Kenyan law calls the "last seen" doctrine: when a person is last seen alive in the company of the accused, and then turns up dead shortly thereafter, the burden shifts to the accused to explain how the victim met his end. The judges noted the tight proximity in time between Ongache leaving the bar with the appellants and the discovery of his body, combined with the incriminating physical evidence, satisfied the conditions for applying this doctrine safely.

The court acknowledged that no prosecution witness had directly observed the killing. The case was built entirely on circumstantial evidence. But the judges found that evidence sufficient. The deceased had been last seen alive at the bar in the company of the appellants. He left with them. He was never seen alive again. His body was found cut by a sharp object—almost certainly a panga. One of the appellants was caught holding a blood-stained panga. The blood matched. The timing was tight. The logic was tight.

On the question of fair trial rights, the court found no violation. Both men had been represented by counsel throughout the trial, had actively participated in the proceedings, had cross-examined witnesses, and had received adequate disclosure of exhibits. On sentencing, the judges noted that while the Penal Code prescribes death as the maximum penalty for murder, Kenya's Supreme Court had ruled mandatory death sentences unconstitutional, affirming that judges must exercise discretion. The trial court had imposed 30 years on each appellant. The appellate judges found that sentence neither unlawful nor disproportionate—a custodial term that reflected the seriousness of the offense and fell within the bounds of law.

The ruling closes a ten-year chapter in the case of Shem Shefa Ongache. It also reinforces how Kenyan courts apply circumstantial evidence in murder convictions, and how the "last seen" doctrine can carry the weight of proof when direct witnesses are absent. For Agumba and Mbija, it means their convictions stand and their sentences remain: three decades in prison for a killing no one saw but which the law found them responsible for nonetheless.

The deceased was last seen alive at a local bar in the company of the appellants. Shortly thereafter, he left the bar in their company and was never seen alive again.
— Court of Appeal judges
The proximity in time between the deceased leaving the bar with the appellants and the subsequent recovery of his body, coupled with the incriminating exhibits, satisfied the conditions for the safe application of the Last Seen With Doctrine.
— Court of Appeal judges
La Conversación del Hearth Otra perspectiva de la historia
Inventor

How does a court convict someone of murder when no witness actually saw the killing happen?

Model

By building a chain of circumstantial evidence so tight that the accused has no reasonable explanation. In this case, the two men were the last people seen with the victim alive. Minutes later, he was dead. One of them was caught holding the murder weapon with the victim's blood on it. The court called it the "last seen" doctrine—it shifts the burden to the accused to explain how the victim died if they were the last ones with him.

Inventor

But couldn't they just say they left him alive and someone else killed him?

Model

They could say it, and they did argue it. But the judges found the circumstantial evidence too compelling. The timing was minutes, not hours. The weapon was in one man's hand. The blood matched. A witness saw one of them physically stop another patron from going to help. The court found no credible alternative explanation.

Inventor

What about the procedural problems the defense raised—the fingerprints, the DNA sampling, the chain of custody?

Model

Those were serious arguments. A police constable below the authorized rank ordered the DNA sampling. The panga was never fingerprinted. No inventory was made for the bloodstained clothes. In a different case, those gaps might have been fatal. But the appellate judges found the core evidence—the blood match, the weapon, the witness testimony—was solid enough that the procedural irregularities didn't undermine the conviction.

Inventor

So the court is saying circumstantial evidence can be as good as seeing it happen?

Model

In this case, yes. The judges were explicit: there was no direct evidence. But they found the circumstantial evidence—the proximity in time, the physical evidence, the witness accounts—created a logical chain that pointed only to these two men. The "last seen" doctrine essentially says: if you're the last person with someone who then turns up dead, you have to explain that.

Inventor

What happens to them now?

Model

They serve their sentences. Thirty years each. The conviction is final. Unless they can convince the Supreme Court to hear a further appeal, which is unlikely given how thoroughly the appellate court examined the evidence, they remain in prison.

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