U.S. prosecutors on Thursday asked a judge to jail Martin Shkreli while he awaits sentencing for securities fraud, after a Facebook post by the former drug company executive about Hillary Clinton prompted an investigation by the U.S. Secret Service. “Shkreli has engaged in an escalating pattern of threats and harassment that warrant his detention pending sentencing,” prosecutors said in a filing in Brooklyn federal court late on Thursday. They pointed to a Sept. 4 Facebook post in which Shkreli offered $5,000 to followers who could grab a strand of Clinton’s hair during the former presidential candidate’s upcoming book tour. That led the Secret Service, charged with protecting Clinton, to contact him. Shkreli told the Secret Service, through a lawyer, that he would remove the post on Tuesday, but did not do so until Wednesday, prosecutors said. The prosecutors said Shkreli’s conduct showed he poses a “danger to the community,” and that his $5 million bail should be revoked.