The affected elephants reportedly died within one to two days after developing the condition. Photo &Beyond Bateleur CampFollowing the first reports, KWS deployed veterinarians from Nairobi, Tsavo and Amboseli to investigate the deaths, treat affected elephants, conduct post-mortem examinations and collect samples for laboratory analysis. According to the agency, Preliminary laboratory findings from UoN detected a potential toxic substance in samples collected from several of the affected elephants. "Preliminary laboratory findings from the University of Nairobi detected a potential toxic substance in the samples collected from several of the affected elephants," it added. KWS said environmental investigations were also underway, including analysis of water sources and other potential environmental contaminants within the affected areas.