Exculpatory Evidence
Definition
Evidence that tends to clear a suspect of guilt. Investigators have a professional and, in many jurisdictions, a legal duty to document and disclose exculpatory findings even when they contradict the working theory of the case.
- Definition scope
- Evidence tending to clear a suspect of guilt
- Duty
- Professional and, in many jurisdictions, legal duty to disclose
- Applies even when
- It contradicts the working theory of the case
- Context
- Legal and ethical foundations of cyber investigations
Common questions
Why must investigators disclose evidence that undermines their own theory?+
Withholding exculpatory findings biases the investigation toward a predetermined conclusion and can lead to wrongful prosecution. Disclosure obligations exist to keep the process fair to the accused regardless of which direction the evidence points.
What happens if exculpatory evidence is discovered after charges are filed?+
In many jurisdictions the prosecution has an ongoing duty to disclose it to the defense as soon as it is identified, even after charges are filed, and failure to do so can be grounds for appeal or case dismissal.
Related terms
- Chain of Custody
- The documented chronological record of who collected, handled, transferred, and examined a piece of evidence. For digital evidence, chain of custody includes...
- Lawful Interception
- Court-authorised real-time capture of the content of communications in transit, such as telephone calls, emails, or instant messages. Requires a higher legal...
- Mutual Legal Assistance Treaty (MLAT)
- A bilateral or multilateral treaty under which signatory states agree to assist each other in gathering evidence for criminal investigations. MLATs define...
- Proportionality
- The legal principle, central to European human rights law and to many constitutional systems, that any interference with a fundamental right must...
- Search Warrant
- A judicial order authorising officers to enter and search a specified place and seize specified items. In most systems it must describe...