Kentucky Derby investigation: Why are horses dying? 

(NewsNation) — Some spectators are pushing for new horse industry regulations amid seven horses dying prior to the start of the Kentucky Derby.

However, Joe Bianca, a former editor for Thoroughbred Daily News and expert on the matter, said the industry continues to make progress in terms of race track safety and questions alternative death reports.

“It’s just hard because the reports take some time to come back. Some things could be muscular-skeletal. ... It could be in the horses blood stream. You just don’t know, and this is just kind of a freak-thing that they all clustered right before the derby," Bianca said Saturday during an appearance on "NewsNation Prime."

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