sentences:  CMED announced the substantial completion of the independent internal investigation on 30 July 2009.In early 2012, CMED ceased operating and left investors unpaid on $426 million worth of bond debt, as a result of a suspected fraud by CMED's former Chairman & CEO.In January 2012, a class action fraud lawsuit was filed by CMED investors against CMED and its CEO and CFO in the US District Court in the Southern District of New York.