Eight teenagers were injured Wednesday afternoon in a shooting involving a Philadelphia city bus, authorities said, the fourth shooting on the transit system in as many days. #philadelphia #shooting #usa Subscribe for more Breaking News: http://smarturl.it/AssociatedPress Website: https://apnews.com Twitter: https://twitter.com/AP Facebook: https://facebook.com/APNews Instagram: https://www.instagram.com/APNews/ ​ This video may be available for archive licensing via https://newsroom.ap.org/home