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OXFORD, Miss. – A fellow Ole Miss student was charged Tuesday with the murder of St. Louis native Ally Kostial. Police found Kostial dead on Saturday.

Lafayette County Sheriff’s deputies arrested 22-year-old Brandon Theesfeld around 3:45 a.m. Tuesday for Kostial’s murder.

Fox 2 News found he was active on Twitter, even tweeting around the time Kostial would’ve been killed. On July 20, Theesfeld tweeted, “you dropped a bomb on me, my number 1 pick for groovy song of the summer.”

His Facebook profile says he attended a private school in Fort Worth Texas and then went to a boarding school three hours outside of Fort Worth. He enrolling at Ole Miss in 2016, the same year Ally Kostial left St. Louis for the university.

Theesfeld’s father is a doctor who owns a pain management clinic in Ft. Worth. He posted a picture on Facebook of his son in 2013. It says, “Target Practice – ‘my son Brandon Theesfeld gun tactical expert.'”

He told several media outlets Tuesday that his son is innocent and that he had his reasons which he cannot yet share.

Sheriff’s investigators in Lafayette county have released very little about the investigation.

Close friends of Kostial talked about her incredible spirit.

“People always say nice things when people pass, but she was just – out of any friend that I’ve ever had in my entire life, she was the nicest person I’ve ever met,” said friend Sammie Martin.

From sports and cheerleading at Lindbergh High School to the golf club she started in college, and her time with Alpha Phi Sorority, Kostial’s friends said her spark will live on.

“She was just so bright,” said friend Margaret Illig. “She would just light up a room.”

Statement from Larry D. Sparks, Interim Chancellor, University of Mississippi

“Earlier today, the Lafayette County Sheriff’s Department announced an arrest in the murder of University of Mississippi student Alexandria “Ally” Kostial. Charges have been filed against Brandon Theesfeld, a UM student who has been suspended by the university.

I want to extend our deepest sympathies once again to Ally’s family, friends and all others who knew her or interacted with her on campus. Ally was an engaged member of our community with friends across our campus and a promising future. The university will support the Kostial family in every way we can during this traumatic time.

These events remind us of the importance of leaning on each other in the wake of an event that we cannot understand. If needed, the University Counseling Center is offering walk-in grief counseling between the hours of 11 a.m. and 3 p.m. to students, faculty and staff seeking additional support, or you can schedule an appointment by calling (662) 915-3784.

Ally’s death shocks the conscience and causes much pain and sorrow, but it does not define our campus community. We must draw strength from what brings us together as a community, even as we grieve this unspeakable loss.”

Brandon Theesfeld