US Airways flight from Ireland has just made an emergency landing in Philly

A US Airways flight from Ireland has just made an emergency landing in Philly due to an unspecified threat. KDKA has learned that plane was scheduled to continue on to‪ Pittsburgh‬. 

http://pittsburgh.cbslocal.com/2013/08/07/plane-from-ireland-destined-for-pittsburgh-makes-emergency-landing-in-philly/