A fire in an Amtrak train car near New York's Penn Station injured five people and caused significant disruptions to rail service on Friday morning, according to authorities.

The fire occurred in a rail yard train car in the Hudson River tunnel, resulting in damage to overhead wires, New Jersey Transit reported. The incident affected multiple rail services serving the busy transportation hub.

Train delays impacted both New Jersey Transit and Amtrak services into New York. Long Island Rail Road service was also briefly suspended due to the incident, adding to commuter difficulties more than a week after a strike had previously shut down that system.

The fire caused damage to rail infrastructure and snarled traffic at one of the nation's busiest transportation hubs. Authorities have not released details about the extent of injuries to the five people affected or the cause of the fire.

Penn Station serves as a critical transit point for hundreds of thousands of daily commuters traveling between New York City, New Jersey, and Long Island. The incident highlights ongoing infrastructure challenges at the aging facility.