Zimbabwe finds 10 more dead elephants, suspects bacteria
The latest carcasses were discovered on Tuesday and Wednesday near the northwestern Pandamasuwe Forest, where the previous 12 were found.
"We now have a total of 22 elephants that have died," parks and wildlife authority spokesman Tinashe Farawo told AFP on Thursday.
"We have taken samples for testing but we suspect they died from the same cause as the 12 that were found dead last week."
Laboratory results suggest the first dozen -- discovered between Hwange National Park and the resort town of Victoria Falls -- were killed by a bacteria.
They ruled out poaching because the animals were found with their tusks intact.
Others have been poisoned by poachers for their ivory, used to make ornaments and traditional medicine in Asia and the Middle East.
At least 300 elephants died of cyanide poisoning at water holes in Hwange in 2013.
Neighbouring Botswana, home to the world's largest elephant population of around 130,000, lost around 300 elephants early this year. They are thought to have succumbed to natural toxins.