Police say human remains found earlier this week on farmland near Caledon Village were those of an adult woman.

There are reports it was a human skull that was found.

The remains were found near Charleston Sideroad and Willoughby Road by the property owners of the land.

The bodies of Sonia Varashin and 20-year-old Kera Freeland were found only kilometres away in Sept. 2010 and March 2011, respectively.

On Boxing Day 2011, more human remains were found just east, in a rural area near Bolton.

Police aren't connecting any of the cases yet.

"It's far too early to speculate about that," OPP Const. Jonathan Beckett told CTV Toronto.

A post-mortem was performed Friday in Toronto.