The Murder of Karabo Mokoena

Karabo Mokoena's death became one of South Africa's most widely discussed cases of violence against women in 2017. The criminal case established that she had been assaulted by Sandile Mantsoe before her death and that he later tried to conceal what had happened.

Karabo Mokoena

Karabo was 22 years old and lived in Johannesburg. Reporting from her trial described a relationship with Mantsoe that had included previous physical violence. In March 2017, about a month before her death, he assaulted her; that earlier incident later formed a separate count in the criminal case.

Her case should not be reduced to the notoriety of the man convicted of killing her. South African reporting and public discussion repeatedly placed Karabo's death within the broader national crisis of gender-based and intimate-partner violence.

Disappearance and discovery

Karabo disappeared in late April 2017. Her remains were found in an open area in Lyndhurst, Johannesburg. The condition of the remains complicated the medical determination of a precise cause of death, but the High Court later assessed the full circumstantial and testimonial record and rejected Mantsoe's account that she had died by suicide.

This page does not reproduce unnecessary post-mortem details. For the legal history, the important point is that the court found Mantsoe responsible for Karabo's death and also found that he acted afterward to obstruct or defeat the course of justice.

Investigation and trial

Mantsoe was arrested and prosecuted in the South Gauteng High Court in Johannesburg. The prosecution relied on evidence concerning the couple's relationship, the earlier assault, events around Karabo's disappearance and Mantsoe's conduct after her death.

On May 2, 2018, the High Court found Mantsoe guilty of murder, assault with intent to cause grievous bodily harm, and defeating the ends of justice. The court rejected his claim that Karabo had taken her own life.

Sentence

On May 3, 2018, the court sentenced Mantsoe to 30 years for murder, five years for assault and four years for defeating the ends of justice. Because portions of the sentences were ordered to run concurrently, the effective prison term was 32 years.

His lawyer announced an intention to appeal the conviction and sentence. Later reporting from South Africa's Department of Correctional Services and from news organizations continued to describe Mantsoe as serving the 32-year murder sentence. This file therefore reports the established conviction and effective sentence without claiming an appellate result that the reviewed sources do not document.

Later custody and separate fraud case

In 2023, the Department of Correctional Services publicly confirmed that Mantsoe remained in custody after false social-media claims suggested otherwise. In 2024, he received a separate prison sentence in a fraud case involving an investment scheme. That sentence was ordered to run concurrently with his existing imprisonment and does not alter the facts or conviction in Karabo's murder case.

Timeline

1. March 2017
   Earlier assault

   Mantsoe assaults Karabo during the relationship; the incident later becomes a separate count at trial.

2. April 2017
   Karabo disappears and is killed

   Karabo disappears in Johannesburg and her remains are later found in Lyndhurst.

3. 2017–2018
   Investigation and prosecution

   Police investigation leads to Mantsoe's prosecution in the South Gauteng High Court.

4. May 2, 2018
   Guilty verdicts

   Mantsoe is convicted of murder, assault with intent to cause grievous bodily harm and defeating the ends of justice.

5. May 3, 2018
   Effective 32-year sentence

   The High Court imposes 30 years for murder plus additional sentences, producing an effective term of 32 years after concurrency.

6. October 2023
   Correctional Services confirms custody

   The department publicly confirms Mantsoe remains incarcerated, rejecting online claims that he had escaped or been released.

Current status

The case is classified as Solved / Convicted. Sandile Mantsoe was convicted in 2018 and sentenced to an effective 32 years in prison. Sources reviewed through 2026 do not show that the murder conviction was overturned.