The Federal Aviation Administration announced that New York Helicopter Tours, which owned the helicopter that crashed into the Hudson River last week, is shutting down operations.

Federal aviation regulators issued an emergency order Monday grounding the helicopter tour company involved in a deadly New York crash after learning it had fired its operations director minutes after he had agreed to suspend flights during the investigation.

New York Helicopter Tours, the company involved in the Hudson River crash that killed six people, "is shutting down their operations immediately," the Federal Aviation Administration said Sunday. The big picture: The National Transportation Safety Board is leading investigations into the helicopter crash that killed a Siemens executive,