Amazon has shut down construction of a new US warehouse after seven nooses were found on-site in the last month.
Construction has been stopped at the Windsor, Connecticut site until security measures have been put in place.
Amazon said it was deeply disturbed by the incidents happening.
It has offered a $100,000 reward for information on the nooses, the first of which was discovered on April 27.
The looped rope is synonymous with the extrajudicial hangings, or lynchings, of mainly black people in the United States in the late 19th and early 20th centuries.
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