NEW YORK (CBSNewYork) — Dozens of dead cats were found in freezers in a Long Island City storage unit.

Police told CBS2’s Tracee Carrasco 40 frozen cats were found in two freezers, but it’s hard to tell exactly how many because some of the cats were frozen together.

Cats were found wrapped in bags as one skinned cat was also found in an aluminum serving tray. There were two to three other cats found in another tray.

The ASPCA will have to let the cats thaw out to see how they died.

Police said the storage unit was rented out in May 2014 to a woman from Brooklyn who was paying month-to-month, but in July she stopped paying.

Police have yet to find the woman, who they believe is in her 60s, 1010 WINS’ Glenn Schuck reported.

The cats were found after the storage unit went to auction, with the winning bid coming in at over $400.

In addition to the cats, trash, books and papers were found in the unit.

Officers said the odor of the dead cats was horrendous.

The NYPD Animal Cruelty Squad is investigating.