The Philippines discovered cyanide on Chinese boats operating around ‌a disputed atoll in the South China Sea, security officials from the country said on Monday. Authorities said laboratory tests confirmed the presence of the highly toxic substance in bottles seized by the Philippine navy in operations at Second Thomas Shoal last year. Officials ​warned that the cyanide could have had serious consequences for marine life and weakened the reef supporting ​a warship that Manila grounded on the atoll to reinforce its maritime claim. “We wish ⁠to underscore that the use of cyanide in Ayungin Shoal is a form of sabotage that seeks to ​kill local fish populations, depriving Navy personnel of a vital food source,” Cornelio Valencia, National Security Council spokesperson, told ​a press conference using the Philippines’ name for the atoll.

Full report : Philippines accuses China of poisoning disputed waters in South China Sea.