DECORAH, Iowa — A student at Luther College was arrested for an Instagram threat to “kill 80% of the students at Luther.” The college has 1,400 students. Police learned of the threat abut 1:30 a.m. and arrested Peter Bumba, 20, a music education major from Illinois. Police checked Bumba’s room and vehicle but found no weapons. Bumba was booked on a felony charge.

Bumba. Police say he admitted to threat.