Ultimately it was Garrido, questioned separately, who admitted that he had raped and kidnapped Jaycee and that he had fathered her two children. Only later did the woman who went by "Alyssa" reveal herself, according to a report this week by the state Inspector General's Office.

The report, a lashing review of mistakes and missed chances by state parole agents over the past 11 years, sheds new light on how Garrido's parole agent and Concord police discovered an 18-year mystery, tipped off by two University of California Berkeley officials.

The university officials, including a campus police officer, grew wary when Garrido showed up Aug. 25 with two girls, seeking an event permit and spewing religious ramblings. The officer ran a background check, found Garrido was a registered sex offender and tracked down his parole agent.

On a drive to the parole office, Garrido said the two girls "were the daughters of a relative and that he had permission from their parents to take them to the university."

A month earlier, parole officials had attached a new condition to Garrido's lifetime parole from his Nevada conviction for the 1976 rape of a woman he kidnapped in South Lake Tahoe, the report states. He was now barred from being around minors. But the parole agent and his supervisor looked past the new condition, drove him home and ordered him to report back to the office the next day, the report says.

His parole agent was on the phone with the university officer when the Garridos showed up the next day with Dugard and the two girls in tow. The officer said the girls called him "Daddy." The parole agent believed that Garrido had no young children. He separated Garrido from the women and girls.

Alyssa said she was their mother.

"The parole agent believed that Alyssa looked too young to be the mother and asked her age. Alyssa said that she was 29 . . . laughingly explaining that she often gets that comment and that people believe she is the girls' sister," the report says.

She and Nancy Garrido became "agitated" under questioning. Alyssa said she knew Garrido had taken the girls to the Berkeley campus and also knew he was a paroled sex offender who had kidnapped and raped a woman.

Separately, Garrido told a parole agent that the girls were his nieces, all of them daughters of his brother, but that he did not know his brother's address or phone number. The parole agent then called in Concord police.

"As they waited for the officer to arrive, Alyssa said she was sorry that she had lied. She explained that she was from Minnesota and had been hiding for five years from an abusive husband," the report says. "She was terrified of being found, she said, and that was the reason she could not give the parole agent any information."

Garrido finally admitted to a Concord officer that he had kidnapped and raped Alyssa, the report says. Dugard revealed her identity and "confirmed that she had been kidnapped and raped by Garrido."