(CBS) LOS ANGELES The number of children killed by family members and the number of youths committing suicide in Los Angeles County are both at 15-year lows, according to three child-abuse reports released on Friday. The Inter-Agency Council on Child Abuse and Neglect is expected to release reports on child abuse, child fatalities and abandoned infants at a noon news conference at the Kenneth Hahn Hall of Administration. "These reports serve a vital purpose in raising public awareness about the abuse, neglect, abandonment and death of our county children," said Sheriff Lee Baca, ICAN chairman. "The unique and extensive data presented in these reports provide accountability and guidance for our child protection system." According to one of the reports, 30 children were killed by family members or caregivers in 2004.