Elephants are thought to mourn their dead

Lokalo Ekitela was on her way to market when the elephant charged her and her two-year-old son, reports Kenya's Daily Nation newspaper.

Before disappearing into the bush, the elephant buried the bodies under some leaves and twigs in Laikipia District.

Elephants are known to bury their own dead under foliage and often stay with the body, apparently in mourning.

A cow whose calf has died will often stay with the dead baby for days, according to the Kenya Wildlife Service.

Cemeteries

But it is unusual for elephants to bury humans, experts say.

"When there have been human fatalities, the carcass is left in the open," Raymond Travers of South Africa's Kruger National Park told BBC News Online.

On occasion, the hunters themselves were buried whilst taking a cat-nap

Kenya's Save the Elephants

There are old hunters tales from Kenya's Samburu people which tells of hunters seeing elephants bury dead or sleeping people under a pile of branches.

"On occasion, the hunters themselves were buried whilst taking a cat-nap," says Kenya's Save the Elephants campaign group.

Humans are most often killed by elephants when they encroach on the animals' territory, says Mr Travers.

Elephants usually act in self-defence rather than with an intent to kill.

As human populations increase elephants are losing their habitat, and the most common form of conflict between humans and elephants is crop-raiding, says Kenya's Human-Elephant Conflict Working Group.

The elephant population in Kenya is currently estimated by Kenya Wildlife Service to be 28,000.