Another sick person (plural?) surfaces:
Nearly 60 animals have been killed at the Sao Paulo Zoo since last month and police expect to track down the suspected killers soon, a Brazilian official said on Friday.
Laboratory tests have shown the animals were killed with a rat poison banned in Brazil.
Joao Carlos Meirelles, a Sao Paulo state minister, said investigators had ruled out the deaths being an accident, mainly because the dose was so high in most of the dead animals.
The 59 victims so far include an elephant, dromedaries, monkeys and porcupines.
Why?