Muhyyee-Ud-din Abdul-Rahman will spend 20 to 40 months in prison.
Many of the locations were secured and reopened in a short amount of time, while others sent voters to different nearby polling venues.
Oktoberfest resumed Wednesday afternoon following a search of the grounds involving explosive detection dogs, authorities noted.
Classes have resumed Thursday at Conestoga High School in Berwyn, Chester County, after a bomb threat.
A Michigan man has been arrested after missing his flight to Los Angeles and calling in a fake bomb threat, officials said.
Police a 40-year-old was arrested after saying he would be responsible for a bombing at the Coachella Music & Arts Festival.