Authorities are investigating more than a dozen horse killings in South Florida, apparently at the hands of people butchering the animals for their meat.

The latest horse was found butchered Sunday along a rural Miami road on the edge of the Everglades.

Miami-Dade police say the horse had been mutilated.

Two horses were found slaughtered in a similar way in nearby Miramar several months ago. Authorities there also believe the horses were butchered for their meat.

Officials believe the meat is being sold on the black market since the sale of horse meat is illegal in the U.S.

The Miami-Dade Police Department's Agricultural Patrol Unit is overseeing the investigations. No arrests have been made.