Cause of Odor That Sent Residents Fleeing Revealed

Officials conduct an investigation into a odor that begun a voluntary evacuation, Monday, July 14, 2014, in Skippack, Pa. Residents of 150 suburban Philadelphia homes are being allowed to return as their houses are tested after a voluntary evacuation overnight due to a mysterious odor. Officials are awaiting lab results to try to identify the substance responsible for Sunday evening’s problem in the neighborhood in Skippack. (AP Photo/Matt Rourke) Matt Rourke / AP

Officials have revealed the cause of a strange odor that forced over 100 people out of their homes in Montgomery County, Pennsylvania.

NBC 10 Philadelphia: Continue Reading