Several middle school students in Adams County became ill Monday afternoon after taking marijuana-infused candies, school officials said.

The incident happened at Adams City Middle School, 4451 E 72nd Ave., Commerce City, and an ambulance response was made to the school, said Jennifer Lindberg, assistant principal, in a statement to parents.

At about 2:15 p.m., several students reported feeling “nauseated and dizzy,” according to the statement, posted on Facebook. Emergency responders suspected that the students were sickened by marijuana-infused candy and several students reported to the school’s health clerk that they had ingested cannabis candy.

Eight students were taken to a local hospital as a precautionary measure according to South Adams County Fire Department.

“At this time, it is not known how many other students may have ingested the substance,” the statement said. “Accordingly, the students will only be released to parents at the end of the school day.”

The incident is under investigation.