According to newspaper Correio da Manhã a woman called the PSP on Sunday afternoon to help a cat that was meowing incessantly in a nearby abandoned house.
When officers arrived at the property and started searching for the cat they spotted a number of cannabis plants growing on the terrace of another nearby property that was being rented out.
The tenant, a 57-year-old Portuguese man, was arrested in connection with the illegal plants but the noisy cat was never found.