Stevie Wonder sting stopped

Two people were, apparently, trying to blackmail Stevie Wonder. They've been arrested and charged, but Reuters points out some details are missing from the story:

The District Attorney's spokeswoman declined to comment on the nature or details of the alleged extortion plot.

Yeah, generally, if you've gone to the trouble of stopping someone being blackmailed, it'd be unlikely you'd go 'they were going to tell people that he wasn't really blind' or whatever, are you?