NEW : Ybarra 's double - barrel gun fired , he alleges . Ybarra allegedly considered other options for murder before choosing one . Aaron Ybarra is charged with first - degree murder and two counts of attempted murder . Prosecutors will seek a special sentence of life in prison .
NEW : Ybarra 's double-barrel shotgun malfunctioned , prosecutor alleges . Ybarra allegedly considered other campuses for shooting before choosing SPU . Aaron Ybarra is charged with first-degree murder and two counts of attempted murder . Prosecutors will seek a special sentence of life in prison .