Register for $1200 gift card; winner announced Monday at 6:30 a.m.

VIDEO: When the up escalator suddenly goes down

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

Jersey City, N.J. (CBS) -  Screams and panic engulfed a commuter rail station in New Jersey Monday morning when the 'up' escalator changed direction and started to head back down.

The abrupt about face caused some people to jump off mid-ride at the PATH station in Jersey City.

A spokesman for the Port Authority of New York and New Jersey, which operates the station, said four people were injured when the escalator malfunctioned shortly after 9:00 a.m.