At least one subway car on the N line derailed near 57th Street and 7th Avenue around 5 p.m. this afternoon. WABC 7 is reporting the incident involved one car while WCBS 2 says two cars derailed and WNBC 4 notes at least three cars were affected. The train was traveling southbound and no passengers seemed injured--just a little shaken up.

The hundreds of passengers were evacuated by a rescue train which took them to the 5th Avenue and 59th street stop. One passenger, a tourist from Indiana, told WCBS 2, "It felt like it stopped abruptly. I didn't know it derailed. They had us sit while they assessed the situation, and told us to stay calm." Another passenger confirmed everyone "stayed calm."

Naturally, there are some diversions: NYC Transit (which calls it "a train with ongoing mechanical problems") is currently running the Bay Ridge-bound R on the F between 36th Street Station in Queens and the 34th Street- Herald Square Station. There is no N train service between the Queensboro Plaza Station and the Astoria-Ditmars Boulevard Station in both directions. Check the MTA's website for the latest.

Update: Authorities are investigating the accident which officials say involved two cars. Let's hope things are up and running by the time of tomorrow morning's commute!