Several students at an Elementary school in Rancho Cordova were ill after eating candy that contained THC, an ingredient in marijuana, according to a letter to parents on Thursday.

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Robert J. McGarvey Elementary School said administrators received reports of the candy circulating on campus and causing students to be sick. A student brought to the school, but was unaware it contained THC, the school said.

Fire and medical personnel responded to the school to check on the students who were sick.

The packaging closely resembled regular candy, according to the school.

"We encourage all families to be aware of what students bring in their backpacks and to remind children to only bring items needed for their daily learning," the

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