A subway train came apart in transit Sunday in the Bronx, suspending some service on the 4 and 5 lines but resulting in no injuries, MTA officials said.

The third and fourth cars on the southbound 4 train decoupled before 6 p.m., officials said. They did not immediately say how many people were aboard the train or how long it took for them to be rescued.

The FDNY said 60 fire and emergency medical personnel responded to the scene, which they had “under control” within an hour.

Trains on the 4 and 5 lines did not run between the Bronx and Manhattan for several hours Sunday night as authorities addressed the situation. Service on the lines was normal by rush hour Monday morning.

The MTA said it was still investigating the cause of the uncoupling.