The dark, still waters of the Guatapé reservoir have long been a siren song for tourists seeking an escape from the frantic pace of Medellín. Yet, for Alexander Avendaño, that tranquil expanse became a site of profound tragedy and a focal point for a burgeoning legal crisis. When a recreational outing turns into a fatal incident, the law rarely looks only at the immediate cause of death; it peers into the shadows of the surrounding group, searching for the chilling concept of “omission.”
As investigators piece together the final, chaotic moments—marked by reports of illicit substances and physical altercations—the Colombian judicial system is grappling with a challenging question: When does a bystander become a participant through their inaction? This is no longer merely a tragic accident; it is an examination of the legal boundaries of duty and care in a nation where recreational tourism is rapidly outpacing regulatory oversight.
The Jurisprudence of Inaction
In Colombian criminal law, the concept of comisión por omisión—or commission by omission—is a high bar to clear, but it is one that prosecutors are increasingly willing to test. Under Article 25 of the Colombian Penal Code, an individual can be held criminally liable if they possess a “position of guarantor.” Which means that if you have a legal or contractual duty to protect someone, or if you have created a situation of danger, your failure to act is legally equivalent to a direct act of violence.

The crux of the Guatapé case lies in whether the companions of the deceased, by allegedly engaging in a physical dispute or facilitating an environment of intoxication, assumed a position of control over the victim’s safety. Legal experts suggest that if the evidence confirms the victim was incapacitated—either by substances or injury—before entering the water, those present may have had an affirmative duty to intervene. Failure to do so, or worse, actively obstructing help, shifts the narrative from a tragic drowning to potential homicide by omission.
“The legal challenge here is proving the nexus between the omission and the death. If the subjects had the capacity to prevent the harm and chose not to, the law treats that silence as a weapon. It is a question of whether the social contract between friends is superseded by a legal obligation when life hangs in the balance,” says Dr. Carlos Henao, a professor of criminal law specializing in liability theory.
The Regulatory Void in Fluvial Tourism
The tragedy has cast a harsh spotlight on the Ministry of Transport’s oversight of the Guatapé reservoir. It is not just the individuals who face scrutiny; the infrastructure of the “planchón”—the flat-bottomed vessels common in the area—is now under investigation for systemic safety failures. The lack of life vests, the absence of trained lifeguards, and the unregulated consumption of alcohol on these vessels create a “wild west” environment that authorities have long ignored.
This is a systemic failure of policy. While the Ministry of Transport has recently issued warnings regarding safety protocols, these are often reactive measures applied to a sector that prioritizes profit over passenger security. When the regulatory framework is toothless, the burden of safety falls entirely on the individual, creating the very conditions that lead to such catastrophic outcomes.
Societal Fallout and the Erosion of Accountability
Beyond the courtroom, this case reflects a disturbing trend in how leisure activities are conducted in high-risk zones. The reports of “tusi” (a synthetic drug cocktail) and physical violence preceding the death suggest a culture of impunity that often accompanies high-end, unregulated tourism. When the environment is permissive, the internal moral compass of a group can easily shatter, leading to the collective apathy that characterizes many cases of criminal omission.

Statistically, data on waterway accidents in Colombia shows a sharp rise in incidents that involve alcohol or illicit substances. However, these rarely result in high-profile prosecutions. The Guatapé case could set a precedent. If the Attorney General’s Office successfully pursues charges of omission, it would signal a shift in how Colombian courts view the responsibility of companions in social settings gone wrong.
Safety Logistics and the Burden of the Bystander
For those visiting the reservoir, the takeaway is stark: the water is unforgiving, and the law is becoming equally so. Safety in these environments is not a passive endeavor. It requires active vigilance, particularly when substances are involved. The legal risks are not confined to the person who causes the harm; they extend to those who witness it and do nothing.
- Duty of Care: In any high-risk environment, ensure that your group has a designated sober individual.
- Regulatory Compliance: Always verify that watercraft operators adhere to DIMAR (Maritime Authority) standards, including the mandatory provision of life vests.
- Legal Awareness: Understand that in Colombia, failing to assist someone in clear, immediate danger can itself be a crime (Article 131 of the Penal Code: Omisión de socorro).
As the investigation into the death of Alexander Avendaño continues, the public is left with a haunting question: How many more lives must be lost to the waters of Guatapé before we demand both better oversight from the state and a higher standard of responsibility from one another? The legal system may eventually assign blame, but the tragedy itself serves as a grim reminder that in the face of danger, silence is rarely neutral. It is, quite often, a choice.
What do you believe is the threshold for a bystander’s responsibility in an emergency? Should the law hold friends to the same standard as professionals when it comes to the duty to rescue? Let’s keep the conversation going in the comments below.