It can be failrly inferred. CIA has no legal prosecution power, so it has to file complaints with Justice. Justice doesn't act on all complaints filed, in most cases because no leads are provided. That is, they have no person to go after, just the presence of a leak.
The President wants to know who the leaker is too, and the press called for an independent investigation. In principle, CIA and Justice are on the same side, using the same laws, etc.
There is considerable speculation, and it is well described in the media's brief, that the CIA filed the complaint as a matter of CYA or as a defense against a charge that the CIA was unprofessional in handling the covert status of Plame.