Seven endangered black rhinos have died while being transported to a new wildlife reserve in Kenya, reports say.
Wildlife officials are still trying to establish why the critically endangered animals failed to survive the trip, according to the BBC.
The dead animals were among 14 black rhinos being transported to Kenya's biggest national park, Tsavo East, AFP news agency reports.
Estimates suggest there are fewer than 5,500 black rhinos in the world, all of them in Africa and some 750 in Kenya.
The deaths during the relocation process were confirmed by officials speaking anonymously to AFP, although they said the reason why the animals died was not yet clear.
A Kenyan conservationist, Paula Kahumbu, said officials should immediately take responsibility and explain what went wrong.
75Rhinos have died
The relocation of endangered animals involves sedating them for the journey and reviving them on arrival. The process is known as translocation.
Image credit: AFP