L.A. County Sheriff's Detective Danny Coon says there are 338 registered sex offenders in Compton.
Before the Sheriff's department started its registration sweeps, 42 percent of them were not registered properly. On Wednesday, deputies found only 3 percent out of compliance.
"We have over the years found that registrants who failed to register have been involved in other sexual crimes," said Coon. "There've been some high profile crimes by offenders who failed to register, the Runyan case in Orange County and some other cases up north."