Police shot and killed a suspect Wednesday morning at Colorado's new football facility, according to the Boulder Daily Camera.
The report came shortly after the university said a man with a machete had been spotted in the building.
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The university's Twitter account sent out an alert at 9:28 a.m. MT that read: "Armed man with machete is in the Champion Center. Take appropriate protective action."
Seven minutes later, the school and campus police said one person was in custody, and added three minutes later that the situation was "under control."
The Champions Center opened earlier this year and is the centerpiece of the Buffaloes' football program.
It includes football offices, meeting rooms, and medical and dining facilities.