Two shopping centres adjacent to Dawson, Place Alexis Nihon and Westmount Square, directly linked to the Atwater metro station, were evacuated and the green line of the Montreal Metro was shut down for several hours between Lionel-Groulx and McGill. The Pepsi Forum entertainment centre, opposite the eastern corner of Dawson, was open when many of the students came running into the premises moments after the shooting began. Shortly afterward, the Pepsi Forum went into lockdown under the directives of the Montreal Police. Eventually, one of the Forum's entrances onto St. Catherine Street re-opened under police/security guard to allow monitored access and egress.