A human torso that was found in a Kitchener garbage bin is scheduled to undergo an autopsy in Hamilton on Monday.
Police say the remains were discovered around 11 a.m. on Saturday behind an apartment building in the Kitchener's north end.
Investigators say the torso is that of a white woman of unknown age and identity.
Police say the woman wore a black T-shirt with the words "Forget princess I want to be a vampire" on the front.
Insp. Kevin Thaler says police want to hear from anyone who may have spotted any suspicious activity in the area.
"There are people out there that will know what happened here, and why it happened here," Thaler told a news conference.
"We`ll appeal to anybody with information to come forward and … give peace of mind to a family at least and identify who this person is."
Police have not recovered any other body parts.