Trial continues for Chicago police commander accused of assaulting suspect

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CHICAGO -- The trial of a Chicago police commander accused of assaulting a suspect continued Wednesday with the focus on DNA evidence and work done by independent police investigators.

The prosecution rested today in Commander Glenn Evans trial and the defense began its case. Commander Evans is accused of assaulting Rickey Williams during an arrest back in 2013.

Williams says Evans shoved a gun down his throat and held a taser to his groin.

Today, prosecutors called a forensic scientist who testified that DNA of Williams matched DNA on the barrel of Commander Evans's .45-caliber handgun. But defense attorneys argued the match was not proof that the gun was shoved down Williams throat. The DNA could have been transferred if Williams touched the gun.

The defense called officers who were with Evans during the incident as well as investigators with the Independent Police Review Authority. Evans's defense attorneys raised questions about IPRA's handling of the case.

An IPRA investigator admitted she failed to write a report about a key interview until more than a year after it happened. Evans is having a judge decide his fate in this criminal trial. He also faces a $5 million civil suit.

The trial resumes Thursday.