Authorities said that 33 people were injured in a collision accident involving two high-speed trains outside Philadelphia on Tuesday.
According to the Pennsylvania Transportation Authority spokesperson Heather Redfern, an inbound Norristown High-Speed Line train crashed into an unoccupied, parked train at the 69th Street Terminal in Upper Darby.
The accident took place at around 12:15 a.m. local time.
All victims have been sent to various hospitals and the cause of the incident is under investigation.
(CGTN)