Genoa Township police told 10TV that an assaulted officer's uniform is headed to the state crime lab for testing.
The BCI will check for touch DNA in an effort to learn more about the suspects involved in the attack.
Lt. Greg Yurkovich was attacked by at least two suspects in a parking lot.
The incident occurred shortly after 5:30 a.m. Thursday in the 6900 block of Sunbury Road in the Westerville area near Hoover Reservoir.
Yurkovich suffered a concussion and was released from the hospital.
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April 29, 2013 - Sketch of Suspect Released In Officer Attack
April 25, 2013 - Manhunt Under Way For Men Who Attacked, Injured Officer