Washington (CNN) A Justice Department civil rights investigation has concluded that the Ferguson Police Department and the city's municipal court engaged in a "pattern and practice" of discrimination against African-Americans, targeting them disproportionately for traffic stops, use of force, and jail sentences.

The probe is the result of an investigation ordered by Attorney General Eric Holder after the police shooting that killed Michael Brown last summer.

Among the findings, reviewed by CNN: from 2012 to 2014, 85% of people subject to vehicle stops by Ferguson police were African-American; 90% of those who received citations were black; and 93% of people arrested were black. This while 67% of the Ferguson population is black.

In 88% of the cases in which police the Ferguson police reported using force, it was against African-Americans. During the period 2012-2014 black drivers were twice as likely as white drivers to be searched during traffic stops, but 26% less likely to be found in possession of contraband.

Blacks were disproportionately more likely to be cited for minor infractions: 95% of tickets for "manner of walking in roadway," essentially jaywalking, were against African Americans. Also, 94% of all "failure to comply" charges were filed against black people.

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