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Samples from the vomit of students have been sent for lab testing, and police say they have questioned people handling the food, from cooks to packers to delivery workers.

But when you pull out the petals, they transform into individual mini ashtrays, and the stamens become pokers or packers.

"The FDA’s food safety inspections? Well, I’m sure some of the big meat packers would like that."

Dave Willis, a horse packer who lives on monument land in Oregon, has been fighting for creation and preservation of the Cascade-Siskiyou monument for decades.

A woman in her 50s, who asked not to be identified for fear of repercussions, told the BBC she was paid £4 an hour to work as a "packer" in various garment factories.