A nearly yearlong investigation first focused on one section but then expanded to the entire high-security ward, and 16 employees were placed on leave during its course, according to a report released Friday by the Office of Independent Review.
Investigators found that corrections officers skipped regular security checks and left inaccurate log entries.
The teenage boy and girl found having sex had been left unsupervised in a dormitory for hours last February.
The 17-year-olds were both convicted of violent crimes, The Orange County Register reported ( http://bit.ly/W3icIg). The girl faced numerous charges related to two armed robberies, including attempted murder, second-degree robbery, and firing a weapon into a home. The boy was charged with murder and conspiracy.
According to a grand jury report from September, the Orange County Juvenile Hall is a 380-bed co-ed institution.
Of the seven suspensions, three were significant, while the others weren't deemed serious and those workers returned to duty.
Office of Independent Review Executive Director Stephen J. Connolly wrote in Friday's report that supervisors at the juvenile facility fell short of expectations with lax supervision that allowed "problematic work habits to go unchecked and uncorrected."
Two supervisors left their positions via retirement early in the investigative process. The case of another supervisor is still being considered.
The department has implemented some changes and is considering new protocols to help limit the likelihood of similar incidents in the future, Connolly wrote.
Information from: The Orange County Register, http://www.ocregister.com