Park authorities in Zimbabwe are investigating the death of 12 elephants at Hwange National Park.
The elephants were found dead with their tusks intact.
The authorities say they do not suspect cyanide poisoning – used by poachers instead of rifles – as no other wild animal was affected.
Blood samples from the elephants have taken for examination to determine the cause of death.
The Hwange National Park is near the border with Botswana where hundreds of elephant carcasses were found early this year.