evidence: Charles Lieber, the chair of Harvard University's Department of Chemistry and Chemical Biology, has been arrested and criminally charged with making "false, fictitious and fraudulent statements" to the U.S. Defense Department about his ties to a Chinese government program to recruit foreign scientists and researchers. [...] In an affidavit unsealed Tuesday, FBI Special Agent Robert Plumb said Lieber, who led a Harvard research group focusing on nanoscience, had established a research lab at the Wuhan university — apparently unbeknownst to Harvard. In response to the charges against Lieber, Harvard said in a statement to NPR: "The charges brought by the U.S. government against Professor Lieber are extremely serious. Harvard is cooperating with federal authorities, including the National Institutes of Health, and is initiating its own review of the alleged misconduct. Professor Lieber has been placed on indefinite administrative leave."