make the 16-year-old's heart give out. trace gallagher is live with more. trace? >> reporter: really rough story. the 16-year-old died almost a month ago. there was always this underlying suspicion that it had to be more than just caffeine. well, now the coroner's report is out and it shows, in fact, too much caffeine apparently induced a cardiac areutmyia. davis collapsed in class about 2:30 in the afternoon and was pronounced dead an hour later. the county coroner's report said in the two hours before he collapsed, davis cripe drank a large mountain dew, an latte from mcdonald's, then had an energy drink. here's the coroner. listen. >> the purpose here today is not to slam mountain dew. not to slam cafe lattes, not to slam energy drinks. but what we want to do here