A student at the University of Utah was arrested Wednesday after police said she allegedly threatened to detonate a nuclear reactor on campus if the football team lost to San Diego State this past weekend.

The 21-year-old woman allegedly posted "threats of violence" on an app called Yik Yak before the game, according to KSL.com. Police said the student had knowledge of a nuclear reactor on campus and took classes in the same building where the reactor is located.

The student wasn't bluffing about the presence of a reactor — one has been housed in the university's engineering building since 1972. However, the reactor is very small compared to others around the world. It's only about the size of a microwave oven, according to a 2011 article from the Deseret News. It also only generates enough power to heat the thousands of gallons of water its immersed in, according to Utah professor Gary Sandquist.