The Dallas Zoo alerted police to an “unusual” death of an endangered vulture in their Wilds of Africa habitat over the weekend, about one week after a clouded leopard escaped through a “suspicious opening.”

“The animal care team is heartbroken over this tremendous loss,” the Dallas Zoo wrote on Twitter on Sunday, noting that the “circumstances of the death are unusual” and it “does not appear to be from natural causes.”

“Given the recent incidents at the Zoo, we alerted the Dallas Police Department.”

“Given the recent incidents at the Zoo, we alerted the Dallas Police Department.”

The vulture’s death comes after a clouded leopard, Nova, escaped through an opening in her exhibit one week ago.

The vulture’s death comes after a clouded leopard, Nova, escaped through an opening in her exhibit one week ago.

An hours-long search ensued and the big cat was eventually found uninjured and still on-grounds at the zoo.

An hours-long search ensued and the big cat was eventually found uninjured and still on-grounds at the zoo.

The Dallas Zoo is closed as officials search for an escaped clouded leopard, Friday, Jan. 13, 2023.

The Dallas Zoo is closed as officials search for an escaped clouded leopard, Friday, Jan. 13, 2023.

Officials said at the time that the opening to Nova’s exhibit was intentionally cut.

Officials said at the time that the opening to Nova’s exhibit was intentionally cut.

While investigating how Nova escaped, another opening that appeared to be intentionally cut was found in an exhibit for langur monkeys.