Professional rider Ian Olding was killed in a fall at the Belton Park Horse Trials in Lincolnshire, U.K., on Sunday, according to a statement released by the Fédération Equestre Internationale (FEI).

Olding, 47, was competing in the advanced class on a 12-year-old horse named Gran Kiki. The accident occurred at fence 13a, a square spread fence. The FEI said an investigation into the accident is currently under way.

According to an article on Horse and Hound, Olding was a co-owner of the horse. The pair last year completed the Tattersalls world cup qualifier, Thirlestane CIC 3*, and Boekelo CCI 3*.

“Our sympathies on this sad day are with Ian’s family,” said Alex Fox, chairman of British Eventing. “Ian was a well-known and much respected rider, who has been competing for many years. Our thoughts are with his family and friends