ALBUQUERQUE, N.M. (AP) — Investigators say bones discovered in an area of Albuquerque where 11 women and an unborn child were found buried nearly a decade ago are human remains.

Police say the bones discovered Tuesday by construction workers building a park on the city's West Mesa are being examined by the Office of the Medical Investigator.

It's not known whether the remains were those of a woman or man.

Investigators will resume the search after workers scan the dirt lot for power lines.

The discovery less than a mile from the mass grave where human remains were unearthed in 2009 has sparked fears that there may have been more victims in an unsolved serial killing.

Investigators say nearly all the dead women disappeared between 2003 and early 2005 and had worked as prostitutes.