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An Analysis of Modus Operandi and Investigative Interviewing Techniques in a Complex
Murder Case
1. Introduction
The reconstruction of a criminal event relies heavily on two pillars: the forensic analysis of the
modus operandi and the psychological extraction of information through interviewing. These two
elements, when applied in concert, allow investigators to move beyond the surface details of a crime
and delve into the behavioural patterns of offenders as well as the cognitive processes of those who
witnessed or participated in the event. The case of Khomotso Tladi, accused of orchestrating the
murder of her husband, Andrew Tladi, presents a complex scenario where the initial plan—allegedly
a "scare tactic"—devolved into a brutal murder involving multiple perpetrators. Andrew Tladi, a
senior Limpopo health department official, was shot several times, placed in the boot of his own
Mercedes-Benz, transported hundreds of kilometres from his home, and ultimately "finished off" in
Marble Hall. The total estate of the deceased amounted to nearly R4 million, providing a clear
financial motive for the crime. Four other individuals were arrested in connection with the death:
Gilbert Makhobela and Samson Mogalaka, identified as the alleged killers, and Eva Sithole and
Gustav Snyman, described as part of the "brains behind the plan." This case study provides a rich
foundation for exploring how investigators can dissect the behavioural patterns of offenders and
utilise sophisticated interviewing techniques to uncover the truth. The widow, Khomotso Tladi, has
denied ordering the hitmen to kill her husband, maintaining through her counsel that she only wanted
them to "scare him" so that he would return to their Pretoria home. However, conflicting testimony
from co-accused Gustav Snyman suggests that the widow explicitly stated her desire for the killing
to take place. This essay will first define the key concepts of modus operandi, trademarks, and
cognitive interviewing. It will then discuss the modus operandi used in the Tladi murder, with a
specific focus on explaining the concept of "trademarks" and identifying them across the planning,
commission, and post-crime phases of the incident. Subsequently, the essay will explore how the
cognitive interviewing technique could be strategically applied to the key suspects—Khomotso Tladi,
Gustav Snyman, and the alleged hitmen—to establish facts, reconcile contradictory statements, and
build a coherent narrative of the crime. By applying established criminological and investigative
frameworks to this real-world case, this analysis aims to demonstrate the practical utility of these
concepts in the pursuit of justice.
2. Definition of Concepts
2.1. Modus Operandi
Modus operandi, a Latin phrase meaning "mode of operating," is a foundational concept in criminal
investigation. In a criminal justice context, it refers to the distinct methods, patterns, and behaviours
an offender uses to successfully commit a crime. According to Douglas and Olshaker (1995), an
offender's modus operandi is learned behaviour that evolves over time as the individual gains
experience and confidence. It encompasses the practical actions taken to accomplish the crime,
including the selection of the victim, the tools and weapons used, the entry and exit strategies, the
techniques employed to control the victim, and the methods used to avoid detection. The modus
operandi is fundamentally functional in nature, answering the question of what the offender needed
to do to commit the crime and escape successfully. Importantly, because it is learned, an offender's
modus operandi can and often does change as they refine their techniques, making it a dynamic
rather than static element of criminal behaviour (Turvey, 2011).
An Analysis of Modus Operandi and Investigative Interviewing Techniques in a Complex
Murder Case
1. Introduction
The reconstruction of a criminal event relies heavily on two pillars: the forensic analysis of the
modus operandi and the psychological extraction of information through interviewing. These two
elements, when applied in concert, allow investigators to move beyond the surface details of a crime
and delve into the behavioural patterns of offenders as well as the cognitive processes of those who
witnessed or participated in the event. The case of Khomotso Tladi, accused of orchestrating the
murder of her husband, Andrew Tladi, presents a complex scenario where the initial plan—allegedly
a "scare tactic"—devolved into a brutal murder involving multiple perpetrators. Andrew Tladi, a
senior Limpopo health department official, was shot several times, placed in the boot of his own
Mercedes-Benz, transported hundreds of kilometres from his home, and ultimately "finished off" in
Marble Hall. The total estate of the deceased amounted to nearly R4 million, providing a clear
financial motive for the crime. Four other individuals were arrested in connection with the death:
Gilbert Makhobela and Samson Mogalaka, identified as the alleged killers, and Eva Sithole and
Gustav Snyman, described as part of the "brains behind the plan." This case study provides a rich
foundation for exploring how investigators can dissect the behavioural patterns of offenders and
utilise sophisticated interviewing techniques to uncover the truth. The widow, Khomotso Tladi, has
denied ordering the hitmen to kill her husband, maintaining through her counsel that she only wanted
them to "scare him" so that he would return to their Pretoria home. However, conflicting testimony
from co-accused Gustav Snyman suggests that the widow explicitly stated her desire for the killing
to take place. This essay will first define the key concepts of modus operandi, trademarks, and
cognitive interviewing. It will then discuss the modus operandi used in the Tladi murder, with a
specific focus on explaining the concept of "trademarks" and identifying them across the planning,
commission, and post-crime phases of the incident. Subsequently, the essay will explore how the
cognitive interviewing technique could be strategically applied to the key suspects—Khomotso Tladi,
Gustav Snyman, and the alleged hitmen—to establish facts, reconcile contradictory statements, and
build a coherent narrative of the crime. By applying established criminological and investigative
frameworks to this real-world case, this analysis aims to demonstrate the practical utility of these
concepts in the pursuit of justice.
2. Definition of Concepts
2.1. Modus Operandi
Modus operandi, a Latin phrase meaning "mode of operating," is a foundational concept in criminal
investigation. In a criminal justice context, it refers to the distinct methods, patterns, and behaviours
an offender uses to successfully commit a crime. According to Douglas and Olshaker (1995), an
offender's modus operandi is learned behaviour that evolves over time as the individual gains
experience and confidence. It encompasses the practical actions taken to accomplish the crime,
including the selection of the victim, the tools and weapons used, the entry and exit strategies, the
techniques employed to control the victim, and the methods used to avoid detection. The modus
operandi is fundamentally functional in nature, answering the question of what the offender needed
to do to commit the crime and escape successfully. Importantly, because it is learned, an offender's
modus operandi can and often does change as they refine their techniques, making it a dynamic
rather than static element of criminal behaviour (Turvey, 2011).
