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Man found guilty of aggravated assault in Trinity University student’s death sentenced to 20 years

This is the second time Mark Howerton has been on trial for the murder of Cayley Mandadi, 19.

SAN ANTONIO – A Bexar County jury on Friday sentenced a man found guilty of aggravated assault in the death of a Trinity University cheerleader in 2017 to 20 years in prison.

Mark Howerton was found not guilty of the initial murder charge but was guilty of aggravated assault causing serious bodily injury, a lesser charge, earlier this month.

This is the second time that Howerton had been on trial for the murder of Cayley Mandadi, 19. His first trial, in 2019, ended in a mistrial after a jury couldn’t reach a unanimous verdict.

Howerton’s punishment range was between two to 20 years -- he received the maximum 20-year sentence.

Prosecutor David Lunan said Mandadi’s family is relieved to finally have some closure in the case.

“We’re happy -- the family is satisfied that there is closure here,” Lunan said in a statement to KSAT earlier this month. “In having to meet with family members and friends and everything else who were affected by these crimes, and they’ve been hurting, and we are happy to conclude it today.”

Bexar County District Attorney Joe Gonzales issued a statement on the case late Friday afternoon, shared below:

“Cayley’s death is a tragic reminder that domestic violence has devastating consequences,” said Bexar County District Attorney Joe Gonzales, “We are disappointed that the jury did not convict Mark Howerton of murder, but are pleased that he will be held accountable for his actions. The completion of this emotional and difficult journey is a testament to the determination of Cayley’s family and friends and the efforts of our trial team to hold Mark Howerton accountable. May Cayley Mandadi now rest in peace.”

You can watch a mini-documentary of the case in the video player below.


About the Authors
David Ibañez headshot

David Ibañez has been managing editor of KSAT.com since the website's launch in October 2000.

Erica Hernandez headshot

Erica Hernandez is an Emmy award-winning journalist with 15 years of experience in the broadcast news business. Erica has covered a wide array of stories all over Central and South Texas. She's currently the court reporter and cohost of the podcast Texas Crime Stories.

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