NEW : ` ` This is the saddest day in our nation 's history , '' the new president says . 'I am here to take you back to where we were before this happened and make sure that it never happens again. In a statement read on his behalf by Ghana 's information minister Monday , Mills said his government had focused on developing the nation 's economy , according to the Ghana News Agency . " The president was a former law professor and tax expert . The president died at a military hospital , the government says .
NEW : ` ` This is the saddest day in our nation 's history , '' the new president says . 'I am here to take you back to where we were before this happened and make sure that it never happens again. " The president was a former law professor and tax expert . The president died at a military hospital , the government says .