Not in the Barrens, yet. But pretty darn close. Earlier this year there was a sighting in Ramapo, perhaps the same one or most likely a loose captive.
http://www.nj.com/news/ledger/somerset/index.ssf?/base/news-2/1089705099265022.xml
http://www.nj.com/news/ledger/somerset/index.ssf?/base/news-2/1089705099265022.xml