Nearly 100 elephants killed by poachers for ivory

An elephant splashes in the waters of the Chobe river in Botswana, which has Africa's largest elephant population

Ninety elephant carcasses have been discovered in Botswana with their tusks hacked off, a charity said Tuesday, in figures fiercely contested by the government.

Elephants Without Borders said the grim discovery of scores of elephant carcasses, made over several weeks during an aerial survey, is believed to be one of Africa's worst mass poaching sprees.