NEW : In an affidavit filed last year , Powell said , ` ` I am standing tall for my sons '' NEW : ' He killed himself and his sons in a ` ` double homicide , '' an official says . ` ` This was all on him . On Sunday , authorities said Powell met a foster-care worker who had brought his two boys -- ages 5 and 7 , having both celebrated birthdays in January -- to their father 's residence for what was supposed to be a supervised visit . He set this up , he did it , '' the sheriff 's deputy adds . Powell has said he last saw his wife , Susan Cox - Powell , in December 2006 .
NEW : In an affidavit filed last year , Powell said , ` ` I am standing tall for my sons '' NEW : ' He killed himself and his sons in a ` ` double homicide , '' an official says . ` ` This was all on him . He set this up , he did it , '' the sheriff 's deputy adds . Powell has said he last saw his wife , Susan Cox - Powell , in December 2006 .