GOLDEN VALLEY — Animal-welfare officials have removed 55 unhealthy horses, ponies and donkeys from a property in southeastern Minnesota.

The Animal Humane Society said Friday the animals were suffering from untreated wounds, severe malnutrition and other health issues. A number of partially decomposed carcasses were also found on the Fillmore County property.

The group says 12 horses in the greatest need of care were taken to the University of Minnesota Large Animal Hospital in St. Paul for testing. As of Friday morning, four horses had to be euthanized due to health complications.

Prosecutors could use the results of the testing to determine whether criminal charges are warranted.

The Animal Humane Society is working with the Minnesota Hooved Animal Rescue Foundation and other rescue organizations to treat the animals and find homes for them.