Philippines Accuses Chinese Fishermen of Cyanide Poisoning in Disputed Spratly Islands
The Philippines has leveled serious accusations against Chinese fishermen, alleging the use of cyanide poisoning in the contested waters of the Spratly Islands, specifically around Ayungin Shoal. According to the National Security Council (NSC), this destructive practice reportedly began last year near the Second Thomas Shoal, a critical area known for its rich natural resources and strategic shipping lanes.
Environmental Sabotage and Military Threats
NSC Assistant Director General Cornelio Valencia described the cyanide use as a form of "sabotage" aimed at depleting fish stocks that serve as a food source for Filipino soldiers stationed on the BRP Sierra Madre. He emphasized that this action not only jeopardizes the health of troops through contaminated water and food but also poses a severe risk to the coral reefs supporting the vessel, potentially undermining its structural integrity.
Evidence and Incidents
The Philippine Navy reported seizing at least 10 bottles of cyanide from boats linked to Chinese fishing vessels in 2025, with recent incidents further indicating ongoing use of the toxic substance in the area. While no Filipino soldiers have been reported affected by the poison so far, officials have raised concerns about the long-term environmental and health impacts.
Diplomatic and Security Responses
Philippine authorities plan to submit a detailed report to the Department of Foreign Affairs, which could form the basis for a diplomatic protest against China. In response, China has strongly denied the allegations, dismissing them as a "stunt" and asserting that their fishing activities are normal, while accusing Filipino forces of harassment. Meanwhile, the Philippine Navy and Coast Guard have intensified patrols in the region to prevent further environmental damage and maintain territorial security.
Broader Implications
This incident highlights escalating tensions in the South China Sea, with implications for:
- Marine conservation and biodiversity in ecologically sensitive areas.
- International relations between the Philippines and China over disputed territories.
- Military security for troops deployed in remote outposts like the BRP Sierra Madre.
As both nations exchange accusations, the focus remains on protecting the marine environment and upholding sovereignty in one of the world's most contentious maritime regions.



