Within a month, U.S. representatives said they found no evidence that a site in northeast China had been used as a concentration camp, though "the United States remained concerned over China's repression of Falun Gong practitioners and by reports of organ harvesting".
In the given context, the United States expressed concern over China's treatment of Falun Gong practitioners and reported instances of organ harvesting despite finding no evidence to support claims that a site in northeast China was used as a concentration camp.