(CNN) Michigan authorities say they've found improperly kept remains of fetuses and infants at a second Detroit funeral home, just one week after similar remains were found at the first.

Police and license inspectors found the remains of 63 fetuses or infants -- some of whom died three years ago -- at Perry Funeral Home on Friday, the Detroit Police Department said.

Inspectors raided the funeral home in response to a complaint, the Michigan Department of Licensing and Regulatory Affairs said, without releasing details of the complaint.

Thirty-seven of the dead fetuses or infants were found in three unrefrigerated boxes, police and the regulatory department said. Twenty-six were in a freezer, police said.

Licensing and Regulatory Affairs said it has suspended the funeral home's mortuary science license because of "multiple violations of Michigan's public health and occupational codes and an imminent threat to the public health and safety."

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