from news:

"Rick Baedeker, the executive director of the California Horse Racing Board, acknowledged that it was a delicate case because of its timing. He said regulators moved cautiously because scopolamine could be found in jimson weed, which can grow wildly where dung is present and become inadvertently mixed in feed, and that “environmental contamination” is often used as a defense.

“We could end up in Superior Court one day,” he said.

“There was no way that we could have come up with an investigative report prior to the Kentucky Derby,” he added. “That’s impossible. Well, that’s not impossible, that would have been careless and reckless for us to tell an investigator what usually takes you two months, you have to get done in five days, eight days. We weren’t going to do that.”