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Nature 402, 7-8 (4 November 1999) | doi:10.1038/46874

Threats to US primate researchers

Steve Nadis

A radical animal rights group calling itself the Justice Department last week mailed threatening letters, with razor blades dangerously positioned inside the envelopes, to scientists at primate research centres across the United States.The letters, which were sent from Las Vegas, Nevada, with no return address, told the researchers: "You have until autumn of 2000 to release all your primate captives," and added "if you do not heed our warning, your violence will be turned back upon you".