The Metropolitan Transit Agency suspended crew members from an elevated subway train that opened its doors before all the cars had pulled into the platform, the agency said.
No passengers stepped out.
A video taken by a passenger when the doors opened showed a narrow walkway beneath the tracks and the street below.
MTA spokesman Kevin Ortiz tells the Wall Street Journal that the conductor and the operator of the Brooklyn-bound M train have been suspended with pay while the MTA investigates. If the crew is found to blame for the incident, they could lose their jobs.
"It's obviously something we take incredibly seriously," Ortiz told the Journal.
MTA and union officials said it's unusual for a train to open its doors before it reaches the platform.