A fiery overnight blaze inside a Hudson River tunnel near New York’s Penn Station sent shockwaves through the nation’s busiest rail corridor, forcing major service suspensions and triggering massive commuter disruptions across the region. Emergency crews rushed to the scene around 1:30 a.m. Friday after an Amtrak contractor maintenance vehicle caught fire underground, with dramatic footage showing thick smoke pouring through the tunnel and intense flames visible from inside a nearby passenger train.

The fire severely damaged critical overhead electrical wires and left five transit workers injured, including two reported in serious condition as firefighters battled the dangerous smoky conditions deep beneath Manhattan. Amtrak, Long Island Rail Road, and NJ Transit all faced major delays and partial shutdowns into and south of Penn Station, creating widespread travel headaches for thousands of commuters heading into the city during one of the busiest travel periods of the week.

Video from the chaotic scene quickly spread online, showing FDNY units flooding the area near Penn Station while emergency lights illuminated the dark streets surrounding the transportation hub. The incident reignited concerns over aging Northeast Corridor infrastructure and raised fresh questions about operational safety inside America’s most heavily used rail systems as officials scrambled to restore service and prevent even greater commuter gridlock throughout the day.