Churchill Downs suspends races after a dozen horse deaths

• Races for its current spring-summer meet will go forward this weekend, while the remaining races will be relocated to Ellis Park in Henderson, Kentucky.

What they're saying: The racetrack said it "has seen an unusual number of horse injuries over the previous month," and that initial investigations by horse-racing authorities had not identified a "single factor" behind the deaths.

• Still, Churchill Downs said it was relocating races "in an abundance of caution, and in alignment with a recommendation from" the Horseracing Integrity and Safety Authority to allow for a "a top-to-bottom review of all safety and surface protocols and integrity measures in collaboration and consultation with nationwide experts."
• "What has happened at our track is deeply upsetting and absolutely unacceptable," Bill Carstanjen, CEO of Churchill Downs, said in a statement Friday.

The big picture: Seven horses died at Churchill Downs in the days before the Kentucky Derby on May 6.

• One trainer was suspended from the track after two of his horses collapsed and died after racing at Churchill Downs.

Go deeper: Deaths cast shadow over Derby