NEW : Radar shows irregularities in yard where cadaver dogs alerted . NEW : Another bone found as crews broke up concrete on the property . Advertisement - STORY CONTINUES BELOW Ilene Misheloff ,13 , went missing in 1989 and Michaela Garecht , 9 , in 1988 .
NEW : Radar shows irregularities in yard where cadaver dogs alerted . NEW : Another bone found as crews broke up concrete on the property . Phillip and Nancy Garrido are accused of abducting Jaycee Dugard . Ilene Misheloff ,13 , went missing in 1989 and Michaela Garecht , 9 , in 1988 .