After eating sweet bread from a Santa Ana bakery, thirty people got ill, complaining of heart palpitations and hallucinations. The deputy health counselor for the Orange County Health Agency said that people developed symptoms somewhere between 20 minutes and two hours after they consumed the rosca de reyes — Mexican sweet bread, traditionally eaten on Jan. 6 for Dia de los Reyes (The Three Wise Men Day). Preliminary lab results indicate the presence of a synthetic drug in the bread. A criminal investigation has been launched.

Around the same time as the incident, senators from California and Ohio introduced legislation that takes aim at producers and importers of synthetic drugs. The bill is called the Protecting Our Kids from Dangerous Synthetic Drugs Act.

Read more about the evolving problem of synthetic drug use at NPR.org.