Zimbabwe elephants poisoned by cyanide in Hwange Park

Ivory poachers in Zimbabwe have killed more than 80 elephants by poisoning water holes with cyanide.

Wildlife authorities found the carcasses in the remote Hwange National Park which is home to one of the world's biggest herds.

Officials say it is not clear where all the tusks have been hidden or if they have already been smuggled to ivory markets in Asia.

Catharina Moh reports.