A man who was arrested by NYPD detectives inside a Brooklyn liquor store in a case of mistaken identity filed a federal civil rights lawsuit.

Timothy Brown says he walked into the store to buy wine on April 14. His lawsuit states that detectives mistook him for a suspect, punched him and dragged him through broken glass.

Brown needed 25 stitches.

Brooklyn prosecutors declined to pursue charges.

"Something has to be done and the system has to change and do a better job because this was disgusting and that day was terrible," Brown said on Tuesday.

The NYPD says it broke up the team and put both detectives on modified duty.

Brown's lawyer says they asked the city for $100 million back in April.

Brown is asking for a jury trial in the federal case.