HAYS COUNTY, Texas - A man will serve 40 years for murdering a teenager protecting his sister outside their Kyle home in 2020. 21-year-old Isaac Arispe was 15 at the time of the murder, but was certified to stand trial as an adult.

What they're saying: A jury convicted Arispe in March of murdering 19-year-old Christopher Trevino in December 2020.

He opted to have the judge sentence him.