NASHUA, N.H. (CBS) – A 15-month-old died at a New Hampshire home that police are investigating as a possibly unlicensed daycare.

An ambulance was called to 131 Ash Street in Nashua on Wednesday afternoon, where a young boy was unconscious and not breathing.

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EMTs began CPR upon arrival, but the child was taken to an area hospital and did not survive.

Several other children were in the building, known as The Kinder Garden, when firefighters and police arrived. They were checked out at hospitals as a precaution, but were all medically cleared.

Police later learned that the daycare may be operating without a license.

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Neighbors said not the first time there has been an incident at the house.

Neighbor Wayne Andrews said he previously reported the daycare.

“We had them shut down once. We called the state. They came in, saw they were running an illegal daycare, and they shut them down,” Andrews said. “A few weeks later they were taking care of kids again so I called the state again. The lady said ‘What do you want me to do, sit outside and count the kids?’”

Nashua Police said they have been in contact with the state’s Child Care Licensing Unit.

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An autopsy was performed on the child, but the results have not yet been released.