LABORATORY tests have pinpointed what has been plaguing the stray cats at Bayshore Park condominium - a chemical used to immobilise mice and bird pests.

However, the mystery remains as to who is behind the deliberate poisoning.

Traces of alpha-chloralose, a coma-inducing drug, were detected in samples of food planted all over the estate. The chemical was also found in the liver and kidney of one of the cats, during an autopsy by the Health Sciences Authority's Toxicology Department.

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