Waterloo Regional Police say they expect to charge a 37-year-old man with first-degree murder and indignity to a human body. He was arrested at 4 a.m. on Thursday without incident.
Police say the arrested man, who has not yet been named, remains in police custody. Police said they do not expect to make other arrests in the case.
The 24-year-old Felker's remains were found Saturday inside a trash dumpster at 250 Frederick St. in Kitchener.
Her torso was wrapped in a black T-shirt that read "Forget princess, I want to be a vampire."
Police had released a picture of a similar T-shirt earlier this week in hopes of obtaining tips from the public.
On Tuesday, police said that the information they received was "an important factor" leading to the identification of the deceased.
On Facebook, plans have been announced for a vigil next Monday evening at Kitchener’s city hall.
The Record, a local newspaper, has reported that Felker had faced addiction problems.
The investigation into Felker’s death is the third time in just six months that police in southern Ontario have been confronted with cases involving dismembered victims.
In August, Peel police led an investigation into the death of a missing Toronto woman whose remains were found in several locations. Police later charged her former boyfriend with second-degree murder.
That same month, a woman’s torso was found in the lower Niagara River. The victim was later identified as a missing mother from New York state. Some additional remains were later located in the U.S.