SAN DIEGO (AP) — Approximately 25 race horses were killed when a wildfire engulfed about eight barns at a training center in northeast San Diego County, the California Horse Racing Board said. Other horses that were in surrounding pastures remained unaccounted for.

Nearly 500 horses were stabled at the San Luis Rey Downs training center in Bonsall when the fire erupted amid strong Santa Ana winds Thursday, and workers risked their lives to free horses from stalls and herd them into safer areas, a board statement said.

Horses worth hundreds of thousands of dollars who are usually carefully walk...