A photo posted on Twitter shows long cracks in the glass spidering out from the sizable point of impact.
Nobody was injured, but some riders were concerned a bullet had caused the damage. Nobody was injured but the engineer decided to stop the train, carrying more than 200, in New Jersey to assess the damage.
Amtrak says they are investigating. Here's the full statement:
Amtrak is investigating an incident in which objects appear to have struck Acela Express Train 2222. The incident was reported at 6:55 p.m. on January 31. At the time of the incident, 201 passengers were on the train. There were no injuries reported to any passengers or crew. Amtrak and local authorities are investigating. The train originated in Washington, D.C. and arrived at its final destination in New York City shortly after 8 p.m.