Evidence of What Exactly?

Things are getting nuttier.....if that's possible:

• The woman who sources say was out drinking with then-Chicago police Superintendent Eddie Johnson the night he was found asleep in his vehicle has been accused of tampering with evidence amid the city watchdog’s investigation into the incident, the Chicago Tribune has learned.
  
  The woman — a Chicago police officer on Johnson’s security detail at the time of the October incident — was accused of removing a SIM card from a cellphone that had been sought as evidence by the office of city Inspector General Joseph Ferguson, according to a document obtained by the Tribune. SIM cards store the data on cellphones.
  
  The document obtained by the Tribune through an open-records request indicated a sergeant in the bureau where the officer is now assigned filed a complaint making the allegation against her.
  
  “The accused officer is alleged to have removed a SIM card from a cell phone that was requested as evidence by the OIG,” the document said. The document doesn’t describe which investigation but lists a “date of incident” of Nov. 21. Ferguson’s office has been investigating Johnson since soon after officers found him asleep in a running vehicle near his South Side home after a late weeknight out in mid-October.

We've seen a couple people saying that Special Ed doesn't have to cooperate with Fergie since he's no longer employed by the City, but there is previous court precedent that says the City can force the issue. That would be the McDonald case (of all things) against the lieutenant who retired rather than tell the IG why all those exempts declared the shooting justified.

So what are they looking for on the city phone? If she was "busy" with Johnson's johnson as the ChicagoCrusader article up top suggests, then she isn't the one who made the 911 call. Are there pictures? Is Fergie looking for GPS data? This investigation seems to be a lot more involved than anyone thought.