An investigation into an animal rescue in Fortuna, California, suspected of animal cruelty and fraud ended in tragedy when police recovered the remains of over 100 dogs found buried in a mass grave on the rescue's grounds.

On June 25, the Humboldt County Sheriff’s Office Major Crimes Division reported finding some 117 intact deceased dogs, along with hundreds of bones, 21 canine skulls, and six loose microchips during excavations.

A majority of the dogs were microchipped, and many were found to have been killed by gunshots, police confirmed after forensic testing.

While continuing excavations in the area, police found additional deceased dogs in various stages of decomposition, some beyond the point where evidence could be collected.

Investigators also found over 600 dog collars in a barn, which is believed to be where the dogs were killed.

Investigation expected to take time due to amount of evidence found

“This investigation is just getting started. There is a tremendous amount of data to process, witnesses to interview, and evidence to examine. The Major Crimes Division is laser-focused on this case and will continue working with our state and federal partners to examine every lead,” Sheriff William F. Honsal stated.

“We are grateful for the investigative teams from the county, state, and federal government. We are also grateful to the private forensic veterinarians who performed the necropsies on site. The determination all of these professionals showed while working through this horrific scene is something we will not forget.”

The investigation is still ongoing and is expected to continue in the near future due to the amount of evidence to review.