Naugatuck Police responded to a dog trainer business after receiving multiple complaints of possible animal cruelty, officials said.
Officers conducted a search at Black Rock Canines on Hunters Mountain Road on Wednesday.
The business breeds and trains dogs, according to their website.
Police said they were granted a search and seizure warrant for Black Rock Canines. As a result, evidence was seized.
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The investigation remains ongoing. It's unknown if any arrests have been made.
No additional information was immediately available.