NEW YORK —NJ Transit resumed service in-and-out of New York Penn Station following a deraliment on Monday morning.

Limited service started at 12:30 p.m. on the Northeast Corridor and North Jersey Coast with delays of at least 30 minutes due to track constraints.

Raritan Valley Line service, however, remains suspended between Newark and New York while MidTown Direct service will be diverted to Hoboken for the rest of the day.

A more detailed schedule for the afternoon commute will be released. The Long Island Railroad said in a statement it is anticipating "limitations on track and platform space" to accommodate track and infrastructure work.

Cross honoring will continue  system-wide among NJ Transit buses, private carriers and PATH at Newark Penn Station, Hoboken and 33rd Street in New York, as well as the New York Waterway.

NJ Transit spokesman Jim Smith said Northeast Corridor train #3926 that left Trenton at 7:30 a.m. was involved in a "slow speed derailment" on track #9 around 9 a.m.

Four passengers suffered minor injuries, according to Smith, out of the 1,200 passengers and crew on board.

In a video posted by Twitter user "NJTCommuter," passengers are seen getting off the train calmly, and several police officers are seen on board.

It's the second derailment involving a NJ Transit train in less than two weeks. An Amtrak Acela train leaving the platform bumped a NJ Transit train on March 24, suspending service for much of the day.

This is a breaking story. Check back for more details.

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Contact reporter Dan Alexander at Dan.Alexander@townsquaremedia.com.