Glenn Evans trial focuses on DNA evidence Wednesday

CHICAGO (WLS) -- DNA evidence was the focus Wednesday at the trial of a Chicago police commander accused of shoving a gun down a suspect's throat.

Glenn Evans is charged with aggravated battery and official misconduct in the January 2013 incident.

On the stand Wednesday, the defense went over DNA found on the gun. Evans is accused of shoving a gun down the throat of Rickey Williams during a foot pursuit that ended in his arrest