The Dallas Zoo said it had alerted police to the “unusual” circumstances surrounding the disappearance of a vulture found dead over the weekend.
Zoo spokeswoman Kari Streiber said the death “does not appear to be of natural causes” but the zoo cannot share further details until police have more time to investigate.
“The animal care team is heartbroken over this huge loss,” she said.
Police confirmed they were investigating the death as suspicious and said an autopsy would be performed on the bird.
The death comes just over a week after hours of searching for a missing clouded leopard sparked a criminal investigation. Police believe that the cat enclosure was deliberately opened along with the langur habitat.
“Last week we added additional cameras throughout the zoo and increased patrols at night,” Streiber said. “We will continue to implement and expand our security measures to whatever level is necessary to keep our animals and staff safe.”
No further information was forthcoming.