New York Police Department divers were captured on aerial video responding to the fatal Hudson River helicopter crash last week in Jersey City, New Jersey.

The rotor of the helicopter from last week's deadly crash has been retrieved from the Hudson River, four days after the devastating accident that killed all six people on board, according to a statement from the National Transportation Safety Board.

Agustín Escobar, a Siemens executive, his wife and their three young children died after the sightseeing helicopter went down.