These people really do not like facts.
The only fact they want now is an indictment so they can use it as a predicate to sue the city for big $s. The die was cast by the scheme machine earlier with the Martin case. Get the matter into court thereby providing some element of preponderance of proof, start a mob demanding action thereby threatening a huge civil finding, and settle for some outragious amount because the city would be afraid of an even bigger trial finding.