KWS probes cyanide link after Amboseli elephant deaths; park stays open
Key points
- KWS recorded elephant deaths across the wider Amboseli landscape between 24 June and 31 July 2026.
- Most victims were adult females and calves that showed weakness and partial limb paralysis before dying.
- University of Nairobi preliminary lab work identified cyanide poisoning as the probable cause; confirmatory tests continue.
- PCPB leads multi-agency chemical checks; giant star grass is also under review; park remains open, no infectious disease found.
The immediate consequence for Kenya’s tourism and conservation calendar is double-edged: a serious poisoning probe is under way after a cluster of elephant deaths in Amboseli, yet Kenya Wildlife Service says the park is still open and there is no evidence of a contagious disease that would force a public-health style shutdown, Capital FM reported from a Thursday KWS statement.
Deaths were logged between 24 June and 31 July 2026 across the wider Amboseli landscape. Most of the dead animals were adult females and calves that exhibited weakness and partial paralysis of their limbs before dying — a clinical picture that pushed investigators toward toxic rather than purely infectious pathways. After the first case, KWS deployed veterinary and scientific teams from Nairobi, Tsavo and Amboseli for post-mortems, tissue sampling and heightened surveillance.
Cyanide lead, chemicals and forage
Working with the Government Chemist and the University of Nairobi, KWS is running toxicological, microbiological and environmental tests, including water sources. Preliminary laboratory analysis by the University of Nairobi identified cyanide poisoning as the probable cause in cases examined; confirmatory tests continue to verify the finding, map exposure routes and identify the toxic source.
KWS has enlisted the Pest Control Products Board (PCPB) to lead a multi-agency technical team examining whether pesticides or other agricultural chemicals were improperly used, stored or disposed of in Kimana, Kuku, Kitenden and surrounding areas, and whether water, soil or forage was contaminated. Investigators are also testing whether giant star grass (Cynodon plectostachyus), known to produce cyanogenic compounds under certain environmental conditions, may have contributed.
Director General Prof. Erustus Kanga said the agency remains committed to establishing the facts and informing the public. Surveillance, ranger patrols and community collaboration have been stepped up. KWS stressed that investigations so far found no infectious or transmissible disease and that Amboseli National Park continues to operate normally — a key message for tour operators and visitors while the cyanide hypothesis is tested. Environment desk: Environment. Verified: date window, female/calf paralysis pattern, UoN preliminary cyanide, PCPB multi-agency role, star-grass hypothesis, Kanga commitment, park open/no infectious disease. Final cause may refine once confirmatory toxicology and environmental mapping conclude.
Community conservancies that share the Amboseli–Tanzania elephant corridor will want clear guidance on water points and chemical storage while the probe runs. A confirmed cyanide pathway — whether malicious, negligent agricultural disposal or natural forage — would drive different enforcement and farmer-outreach responses. Until confirmatory results land, KWS’s dual message stands: investigate aggressively, keep the park open without claiming the science is finished.
Based on Capital FM reporting of the KWS statement. Preliminary lab findings are subject to confirmatory tests; toxicology reports control final cause attribution.
