Personnel with the Maricopa County Sheriff’s Office are investigating the incident.
The facility, and the Salt River horses, are west of the Heber WHT, where ten wild horses have been shot in the past three weeks. No arrests have been made in the case.
My friends, you’re not in California. Set the dart guns aside and get reacquainted with gas operated, magazine fed, semiautomatic rifles, such as this one. Note the images at 0:22 and 2:42. In the forest. Hint, hint.
UPDATE: Added video by ABC-15 in Phoenix.