British Columbia’s coroner’s office is calling the discovery of a sixth floating human foot a hoax, saying it was really an animal paw stuffed inside a running shoe.

At first, Wednesday’s discovery deepened the mystery surrounding the feet, all found floating along island shorelines in the Strait of Georgia near Vancouver.

But the coroner’s office Thursday called the lastest find a hoax, saying an animal’s foot had been inserted inside the shoe.

Authorities say they haven’t reached any conclusions about the origin of the five human feet.