Police and fire officials are searching the area and an area of woodland had been roped off, local authorities say.
A lack of information about how many endangered cats live in the wild is hampering efforts, the conservation group WWF said.
The Buenos Aires Zoo recently presented white Bengal tiger triplets, just three months old, to the viewing public for the first time.
Many unlikely bonds have formed between animals that normally have nothing to do with each other.
Wildlife attacks have been on the rise in some parts of the world.
A tiger in India is reportedly eating humans. Experts say it's unlikely it will stop at nine.
The new species was a 2-pound tree-dweller that likely fed on even smaller mammals and insects.
Photographer Steve Winter has traveled to India, Sumatra, Myanmar and Thailand to photograph one of the most endangered big cats in the world.
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