The sound of the Taser caused chaos as people started running out of Penn Station, leaving luggage and shoes behind.
Sixteen people were injured in the panic.
Some people apparently feared there was an active shooter in the station, but police dispelled that rumor.
Amtrak police say that two people were taken into custody for disobeying orders.
They used the Taser on one of the men during the incident.
WATCH THE SUSPECT'S ARREST:
Penn Station chaos after police use Taser