Construction crews stumbled upon the bones while working on a major renovation of the Salt Lake City school’s original library.

SALT LAKE CITY (AP) Anthropologists are investigating bones unearthed during construction at the University of Utah.

Construction crews stumbled upon the bones while working on a major renovation of the Salt Lake City school's original library. The bones are believed to be human, but university spokeswoman Maria O'Mara says university police quickly determined that it wasn't an active crime scene but some sort of historic or prehistoric site.

The building where the bones were discovered was constructed in 1936. State forensic anthropologists are determining how long the skeletons have been there and if there are more in the area.

Although groundwork has stalled, work will continue inside the structure. The building will become the University of Utah's new College of Science in fall 2017.

Today's top stories

NAPA Urges Drivers to 'Watch For Us' During National Work Zone Awareness Week

VDOT Oversees $3.9B Hampton Roads Bridge Tunnel Project

Yanmar America Celebrates Global Customer Service Awards

New York City DOT Unveils Plans for Its Queensboro Bridge Pedestrian Upgrades

Terex Utilities Announces Availability of TL45 On Mini Tracked Carrier for Lifting in Restricted Access Job Sites

Nashville's Belmont University Gets $58M Gift From Executive for Music Row Expansion

New England Revolution Soccer Team Wants to Build Its Own Stadium in Everett, Mass.

Thomas Viaduct Railroad Bridge Recognized as National Historic Civil Engineering Landmark