Evidence Contamination by Political Process
Definition
The compromise of forensic evidence through interference by parties with a stake in the investigation's outcome: selective disclosure, substitution of remains, access denial to specific sites, or pressure on experts to alter their conclusions.
- Mechanisms
- Selective disclosure, remains substitution, site access denial, expert pressure
- Context
- Investigations in conflict zones or politically sensitive cases
- Effect
- Undermines chain of custody and independence of forensic conclusions
- Mitigation
- Independent international observers, documented custody at every handover
Common questions
Who typically has the motive to interfere with evidence in this way?+
Any party with a stake in the outcome: a government implicated in the deaths under investigation, an armed group, or officials seeking to protect an institution's reputation. Motive does not require direct involvement in the original incident.
How do forensic teams guard against this kind of interference?+
By using independent chain-of-custody documentation, involving neutral third-party observers or international bodies, photographing sites and remains before any access is granted to interested parties, and reporting any denial of access as a finding in itself.
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