JeffCo was the main investigation agency in the 1999 Columbine massacre along with national agencies such as the F.B.I. The agency was responsible for responding to the shooting and did. JeffCo lead the investigation and was hit with extreme backlash after it was revealed the agency had the perpetrators Eric Harris and Dylan Klebold in and out of custody prior to the shooting. Following the shooting, one of the perpetrators' parents, Sue Klebold, sued the Jefferson County Sheriff's office for failing to prevent their son from carrying out the Columbine High shootings. County officials were "reckless, willful and wanton" in the way they handled a 1998 police report about Eric Harris' Internet ravings, according to a "notice of intent to sue" filed by Susan and Thomas Klebold. Others said "It's rather astonishing that the Klebolds would hold the Jefferson County Sheriff's Department responsible for their own son's behavior," said Bill Tuthill, assistant county attorney.