It is not clear if anyone has been injured in the incident involving an express F train bound for Manhattan and Brooklyn
The derailment involved an express F train bound for Manhattan and Brooklyn, according to the Metropolitan Transportation Authority.
Emergency services are on the scene, though it is not clear if there are any injuries.
The Metropolitan Transportation Authority (MTA)
MTA Chairman Thomas Prendergast said the middle six cars of the eight-car train derailed.
The derailment happened in a tunnel, about 1,200ft from the 65th Street station around 10.40am.
Aerial footage showed riders emerging from the tunnel via an emergency exit, with a handful being treated on stretchers.
It is not clear how many passengers were on board.