(Des Moines, IA) -- An 18-year-old is facing two counts of first-degree murder after a shooting on Des Moines' southside.
Preston Walls is also charged with attempted murder and criminal gang participation, according to a statement from the Des Moines Police Department.
Two students, ages 18 and 16, were killed in the shooting.
49-year-old William Holmes, known as Will Keeps, of Altoona, was injured and remains hospitalized in serious condition.
Keeps is founder of the non-profit Starts Right Here, working with at-risk youth.
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