Hamilton police have confirmed that bone fragments have been found in the Stoney Creek field where a search has been under way for the remains of a 62-year-old woman.

Police and forensic experts spent two days last week combing a field near Winona, Ont., for Shirley Treadwell.

The bone fragments will be analyzed for DNA to determine if they are human or animal.

Treadwell, who had a mental disability, is believed to have died in 2009. Police were alerted to her death in July 2012.

Her niece and caregiver, Melinda Evans, was charged in September of this year with commiting an indignity to a human body and fraud. Evans allegedly disposed of her aunt's body and collected disability cheques, but police have yet to find Treadwell's remains.

The focus of last week's search was an area of about 37 acres,  from Barton Street to Highway 8 and Glover Road to Jones Road.

Staff Sgt. Paul Evans said that the searchers last week were, "using a number of techniques because of this field and the terrain."

Hamilton police also called in University of Toronto forensic expert Dr. Tracy Rogers, director of forensic anthropology, and 14 of her students to help with the search. Rogers' expertise is in locating and identifying human remains and burial sites, looking for things that police might otherwise miss.

Rogers told CBC Hamilton on Monday that she and her team had completed their work, and would not be involved in the testing of the bone fragments that were found. She could not give an estimate of how long the DNA testing would take.