CPD Supt. Larry Snelling said in October that nine officers were under internal investigation for having ties to the Oath Keepers.
The Oath Keepers played a large role in the Jan. 6, 2021 insurrection on the U.S. Capitol.
The ABC7 I-Team is looking into the CPD investigation.
In an internal investigation report released Friday, CPD says the members claimed they joined the group for discounts, training and its support of the Second Amendment.
The officers also claimed they joined the group before 2012, and had no idea they were joining a hate or white supremacy group.
The investigation found the allegations of wrongdoing were not sustained and no one was disciplined.
CPD released a statement Thursday night, saying, "We can confirm the investigation is closed and the allegations were not sustained."
Snelling that if an investigation found any members of a hate group in the department, they would do everything possible to "remove those members from our ranks."