Nineteen-year-old Hunter M. Park said nothing during a court appearance Wednesday.
Defense attorney Jeff Hilbrenner told a Boone County judge that Park’s cystic fibrosis was made worse by his stay in the county jail.
Authorities say the threats showed up November 10th on the anonymous location-based messaging app Yik Yak and other social media.
A university police officer says Park, when confronted the next day in his Rolla college dorm room, admitted he wrote the postings.
Police reports obtained by The Associated Press also show University of Missouri police responded in January when a female friend at the Columbia campus reported Park threatened suicide.