“At approximately 3:04 p.m. the emergency brakes were automatically activated on a southbound 6 train north of the Parkchester station in the Bronx. The train operator and a supervisor inspected the outside of the train and discovered one axle/two wheels had left the track. We are investigating the root cause of this minor derailment. There are no reported injuries, everyone is safe and all customers have been transferred to another train. The latest service changes are available on mta.info."