Ex-U.S. Olympian Michael Barisone -- who competed in Dressage in the 2008 Olympics -- allegedly shot a woman at his upscale equestrian center in Jersey, according to reports.
The 54-year-old reportedly got into a dispute with the woman at the fancy 53-acre Hawthorne Farm in Long Valley around 2:15 PM on Wednesday ... and things escalated.
Barisone reportedly opened fire multiple times -- striking the woman, who was raced to a nearby hospital. According to the NY Post, her condition has been described as "up in the air."
Barisone has reportedly been taken into police custody and is expected to be hit with charges in the very near future.