NJ Transit, Amtrak resume service to Penn Station following train car fire

PHILADELPHIA - Amtrak and New Jersey Transit have resumed service into and out of Penn Station following a fire on Friday morning.

What we know:

Firefighters responded to New York Penn Station around 1:30 a.m. for reports of a train car fire on Track 11, according to officials. 

Two people sustained serious injuries and were taken to Bellevue Hospital for treatment. Three others refused medical treatment.

The fire rose to two alarms around 3 a.m. and was placed under control about an hour later, firefighters said. 

Why you should care:

Amtrak and New Jersey Transit both suspended services south of New York City on Friday morning. 

Both have since resumed service into and out of Penn Station, but riders should be prepared for delays and cancelations.

What we don't know:

It's unknown at this time how the fire started.