An animal rights group allegedly claimed responsibility for vandalizing a Michigan slaughterhouse and one of its vehicles and freeing cows from the facility Monday morning.

The Animal Liberation Front (ALF) released an email following the incident at McNee’s Meats. Members of the group spray-painted “Meat is Murder” on the front of the building and a sign outside, glued door locks to the building and company vehicle shut, and released cattle. WNEM reports cages used for holding chickens were also destroyed.