A property in Danville was found to keep about 100 dogs and cats, Contra Costa County animal control officials said.

The animals were removed on Friday but six of the rescued needed to be euthanized due to their medical state.

In its statement on Facebook, the animal services agency said their officers found about 70 to 75 dogs and 25 cats in a reported “hoarding activity” at a property.

The agency said the majority of the dogs and cats were removed safely but “sadly, six of the dogs that were brought to CCAS had to be euthanized due to their medical condition.”

There was no detailed information yet on the person or persons behind the hoarding activity, as well as to the property where the operation was done. San Francisco Chronicle has reached out to the Contra Costa Animal Services but no details yet were provided as of Sunday.

Animals were removed from the property through the help of a group of representatives from Tony La Russa’s Animal Rescue Foundation, Berkeley Humane, and the East Bay Society for the Prevention of Cruelty to Animals. The agency added on its report on Facebook that the removed animals, who were in stable state, will undergo medical evaluation.

A total of thirty-two dogs and five cats were brought by Contra Costa Animal Services to their shelter, the agency said, while the other 42 were under the custody of the three teams.

On Saturday, the agency said some dogs and cats are still on the property. The groups helping their removal are working to assess the animals.