Poachers have killed at least six elephants in just one day at the Mago National Park in southern Ethiopia. 

The poachers used more than 30 bullets for just one elephant with the park's warden describing it as a 'massacre'. 

All the elephants were from one group that had been drinking at the Oromo river when they were attacked. 

The tusks were all removed.

Poaching is not normally seen at this scale in the area.

Last year authorities officially documented 10 elephant deaths. 

BBC Africa