JERSEY CITY - Several people screamed and there was panic when an escalator changed direction this morning at a commuter rail station in Jersey City.

Port Authority of New York and New Jersey spokesman Ron Marsico says six people were injured when the escalator malfunctioned shortly after 9 a.m. at the Exchange Place PATH station.

At least three people were taken to the hospital, but the extent of the injuries was not known.

Video posted on YouTube by a passerby showed people scrambling to get up the escalator, while others had climbed onto the hand railing to escape.

One of the station's three escalators was shut down following the incident. Another remains out of service due to Hurricane Sandy. No service delays have been reported at the station.