L train service between Eighth Avenue and Myrtle and Wyckoff avenues is back up and running after a fuel smell caused service disruptions Tuesday.

A fuel smell on the tracks caused a service suspension as the MTA investigated the source. Some commuters say the smell was so strong that it made them nauseous.

A spokesperson from the MTA later said, "Both the DEC AND FDNY conducted an investigation and both departments have confirmed that non-flammable heating oil from an external source had leaked onto the track, and the incident is completely unrelated to the L train project or any other MTA construction."

The MTA also says air quality at all stations has been tested and was determined to be safe.