Part of a neighborhood in Bristol Township, #Pennsylvania, has been taken over by authorities as investigators work to determine what caused a large portion of the nearby nursing home to explode just two days before Christmas. A PECO crew was on scene before the explosion in response to reports of a gas odor, according to a spokesperson. A representative for the owner of the facility, Saber Healthcare Group, said in an email, "PECO was immediately notified of a gas smell and was on site investigating the matter for approximately 2 hours. The area where the smell was discovered was evacuated."