Man Pleads Not Guilty in Casino Stabbing Case
A man, facing charges for fatally stabbing a woman at a tribal casino, has entered a not guilty plea, stating he lacks memory of the event.
Last month, police attended a report of a stabbing at a tribal casino, where they discovered a woman with fatal injuries. Rigoberto Mendez Morales, 58, was subsequently arrested.
The deceased was recognized as a Native woman associated with the Three Affiliated Tribes of the Fort Berthold Indian Reservation. Mendez Morales appeared in U.S. District Court for North Dakota via Zoom, utilizing a Spanish interpreter, as he pleaded not guilty to second-degree murder. U.S. Magistrate Judge Alice Senechal determined that he must remain in custody until his trial, which is scheduled for April 14.
The defendant’s legal team contends that he was undergoing a severe mental health crisis at the time of the incident and cannot recall the circumstances that led to the woman’s death.
Allegations from Prosecutors
The prosecution claims that Mendez Morales attacked the victim with a knife in a public area of the casino, which triggered an immediate response from security and law enforcement. They assert that:
- The attack was abrupt and violent
- The woman sustained fatal stab wounds
- The defendant was apprehended shortly after the event
There has been no indication of a prior relationship between Mendez Morales and the victim.
Defense’s Mental Health Argument
The defense claims that the defendant has no recollection of the stabbing due to a severe mental health episode. Their arguments include:
- The defendant was in a significantly unstable mental state
- He does not remember having a weapon in his possession
- He has no memory of the alleged attack
The court has ordered further evaluations to assess his competency and mental state during the incident.
Legal Proceedings and Future Steps
Mendez Morales has filed a not guilty plea regarding the murder charges. The judge has mandated that he remain in custody while the case progresses. Upcoming steps may include:
- Mental health evaluations
- Pretrial hearings
- Motions regarding evidence and competency
If found guilty, Mendez Morales could face a significant prison sentence, depending on whether state or federal law applies.
Jurisdictional Considerations
Since the incident took place at a tribal casino, jurisdictional matters may influence the prosecution of the case. Tribal casinos operate under:
- Tribal regulations
- State agreements
- Federal authorities for specific violent crimes
Prosecutors have not indicated that jurisdictional issues are obstructing the case.
Impact on Public Safety
While casino operators have not provided specifics regarding the case, they have reviewed security measures following the incident. Steps taken include:
- An assessment of casino security protocols
- Increased police presence temporarily
- Support resources for victims, staff, and witnesses
Casinos are generally required to have surveillance systems and work closely with local and tribal law enforcement.
Significance of the Case
This case has raised important discussions about:
- Public safety standards at casino venues
- The implications of mental health in violent crime defenses
- Legal considerations surrounding claims of memory loss
Legal experts note that claims of amnesia can influence assessments of competency and criminal accountability, though they do not automatically prevent prosecution.
Looking Ahead
The case will continue through the judicial system, with further hearings anticipated in the upcoming months. Key developments to monitor include:
- Outcomes of mental health evaluations
- Decisions on evidence admissibility
- Tentative trial scheduling
There has been no announcement regarding when the trial might commence.
In Summary
A man charged with the murder of a woman at a tribal casino has denied the allegations, claiming a lack of memory regarding the event. As the case unfolds, the court will evaluate various types of evidence, witness accounts, and mental health assessments to determine accountability.

