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The U.S. Capitol Police said Saturday it has recommended disciplinary action in six cases after an internal review of officer behavior stemming from the Jan. 6 riot at the U.S. Capitol.

The department’s Office of Professional Responsibility opened 38 internal investigations and was able to identify 26 of the officers involved, the police said in a statement. It said in 20 of the cases, no wrongdoing was found, the Associated Press reports.

However, the police said “violations were sustained and disciplinary action was recommended” for six of the cases — including three for “conduct unbecoming,” one for failure to comply with directions, one for “improper remarks” and one for “improper dissemination of information.”

The U.S. attorney’s office did not find sufficient evidence that any of the officers committed a crime.