It started as an unexplained incident involving the sudden death of nearly a dozen peacocks in a Mexico Zoo, now but now it has resulted in the euthanization of 114 peacocks, ostriches and other birds due to an avian virus.
Wilfrido Najera Lomeli said Thursday that department officials detected the presence of Newcastle Disease and destroyed the birds.
They also included ducks, guinea fowl, pheasants, piegons, parrots and parakeets. Some were threatened species.
The zoo in the Guerrero state capital of Chilpancingo was temporarily closed while officials continue their investigation.
The virus can infect people, but it is not lethal to humans.
The Associated Press contributed to this content.