DA : Child 's body found in duffel bag the size of an Oliver . Jeremiah , 5 , was missing for days before authorities were alerted . Mom , boyfriend were indicted in Massachusetts in his disappearance . Case called ` ` serious failure '' for the Department of Children and Families .
DA : Child 's body found in duffel bag matches size of Jeremiah Oliver . Jeremiah , 5 , was missing for months before police were alerted . Mom , boyfriend were indicted in March in his disappearance . Case called `` serious failure '' for Massachusetts Department of Children and Families .