NEW YORK (AP) — Authorities say a woman walking her dog in a New York City park found human skeletal remains officials believe are "likely historical" and were possibly used in a "ceremonial context."

A police spokeswoman says the woman called the police Tuesday evening after her dog put what appeared to be a human bone in its mouth. She says the bones were in plain view when the dog found them.

Investigators with the city's office of medical examiner are at the scene of the 112-acre, wooded Highbridge Park in upper Manhattan.

A spokeswoman for the medical examiner confirmed Wednesday the bones were human.

She says they were probably used in a ceremonial context. She didn't provide further details.