now zimbombwi and we go to the largest game park and talking about killing the animals. >> reporter:s is the worst incident of poaching in zimbabwe and they were killed using cyanide and more carcasses in the national game park and police found cyanide stationed in villages and ten poachers have been arrested. >> we will not allow these poachers to get away with it and we are jailing some of the criminals, for 16 years and anybody involved in this industry, this particular exercise will send them to prison. >> reporter: 90 dead elephants are found and the tusks are sold where ivory is in high demand. it's possible to know where the cyanide contamination started and it's difficult and huge and more than 400 square kilometers and dealing with animals and you cannot put up a sign that says please don't drink the water. government officials are struggling to deal with poaching because of targeted sanctions imposed by western countries more than ten years ago and that is why there is no money to protect these animals. animal rights groups fear more will day. >> the effect of all the other