Well AJ it seems they had pics and video of a couple cougars that had been captive.

The Delaware Division of Fish & Wildlife believes that there are currently at least two, and possibly more, free-roaming cougars in the State. The DNREC has confirmed the presence of cougars in the state over a period of several years. Officials are convinced that these animals are of captive origin. Sighting reports and confirmations of their presence have generally come from New Castle and Kent Counties. Evidence includes home video footage, pictures, tracks, scat and sightings by DNREC staff & law enforcement personnel. The pictures and videos are definitive. There is also evidence that the cats are regularly feeding on white-tailed deer and Canada geese. No reliable evidence exists of cougars taking domestic animals or threatening humans.