The family that owns OxyContin maker Purdue Pharma used Swiss bank accounts to conceal the transfer of millions of dollars from the company to themselves, New York state’s attorney general contends in court papers filed Friday. New York — asking a judge to enforce subpoenas of companies, banks and advisers to Purdue and its owners, the Sackler family — said it has already documented $1 billion in transfers between those parties. Those transactions include millions shifted from a Purdue parent company to former board member Mortimer D.A. Sackler, prosecutors said in the papers. Prosecutors say Sackler then redirected substantial amounts...