SAN DIEGO - 10News on Wednesday went on patrol with state parole agents who were cracking down on registered high-risk sex offenders in San Diego.

During "Operation Boo," any registered sex offender found to be in violation of their parole were brought to the Central Jail in downtown San Diego, where they would get 60 to 90 days max.

Parole agents say before AB-109 was signed into law last year by Governor Jerry Brown, they would have likely been sent back to prison.

10News cameras showed a registered sex offender being arrested and led away in handcuffs for a dirty drug test. Agents say he was smoking marijuana, a simple violation of his parole conditions.

Pornography on DVD was found in one sex offender's house. Parole agents showed it to 10News as they were driving the registered sex offender through the downtown jail's sally port before he was escorted in to be booked.

"For sex offenders, its zero tolerance for them," said Eric Faith, a parole agent with the California Department of Corrections and Rehabilitation.

10News cameras tagged alongside parole agents all evening for the 19th annual operation.

"Basically, it's keeping the community safe," said Faith. "You don't want a sex offender out with children trick or treating. You don't want them going to a sex offender door."

Some though wanted no trouble, complying with their conditions. Others even posted signs on their front doors, stating they were not participating in Halloween.

"Our tax dollars go to a lot of different things and I think this is probably one of the better initiatives our tax dollars are going to… to keep the kids safe," said mother Andrea Hull.

Parole agents say no matter how hard they work, their case loads are growing because of changes in the law.

"A lot of these guys before… they were scared to go back for six months, now 60, 90 days," said Faith. "Their term is we can do 90 days standing on their head."

Parole agents said the deterrent to commit sex offenses is not there like it used to be.

"The buzzword in the community is sex offenders," said Faith. "We have to be on them 24/7."