Michael Francis Thomas, 43, was arrested at an unspecified location in Bryan just hours after a Friday morning bomb threat prompted an evacuation on campus.
Around 10am, the university issued a Code Maroon after someone discovered the word "bomb" written on a mirror in the Clayton Williams Alumni Center. The center was immediately evacuated and searched. It was reopened an hour later after authorities determined the building was safe.
Thomas is also a person of interest in the bomb threat involving Kyle Field earlier in the week, but has not been charged. Additionally, he was arrested on an unrelated warrant for credit card abuse, a state-jail felony.
Thomas is currently being held in the Brazos County jail.
No other details were immediately available.
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