Police and the Medical Examiner's Office are investigating the discovery of bones at a demolition site in Strawberry Mansion.

It is not known yet of the bones are human or animal, police said.

A contractor doing work for the Department of Licenses and Inspections unearthed the remains during a demolition project at 2251 N. 33rd St. about 9:40 a.m., police said.

Other details are not yet available.