ANTIOCH, California (CNN) -- Phillip Garrido and his wife, Nancy, will face 29 felony counts after being accused of kidnapping Jaycee Lee Dugard when she was 11 and keeping her in their backyard since 1991, the district attorney of El Dorado County, California, said Friday.



Phillip Garrido, a registered sex offender, was arraigned in California on Friday.



The Garridos are each facing charges of kidnapping someone under 14 years of age, kidnapping for sexual purposes, forcible rape and forcible lewd acts on a child.



The maximum penalty for both defendants would be life imprisonment.



Authorities are looking into Garrido's possible connection to other crimes.  Hear interview with Garrido »



A search warrant was issued for Garrido's home in connection with killings that occurred in the 1990s, a spokesman for the Contra Costa Sheriff's Department said Friday. Pittsburg, California, police obtained the search warrant, said the spokesman, Jimmy Lee.



Earlier Friday, a California sheriff also admitted that his organization "missed an opportunity" nearly three years ago to find Dugard.



Someone called 911 on November 30, 2006, to say that a woman and young children were living in tents in the backyard of Phillip Garrido, said Sheriff Warren E. Rupf of Contra Costa County, California, on Friday.



"This is not an acceptable outcome," he said.  Watch Rupf talk about the 'missed opportunity' »



The responding sheriff's deputy spoke with Garrido, a registered sex offender, in the front yard of his house.



"None of us, particularly law enforcement, should believe a word that one of these animals utters," Rupf said when asked about the lessons learned from the missed opportunity. "If there's a sophistication [about sex offenders] in any regard, it's in misrepresenting who they are and what motivates them.



"We took things he said obviously at face value and did not properly brand him."



Rupf also said that "to the best of his knowledge," the deputy didn't know that Garrido was a sex offender.



The deputy determined that no crime had been committed even though he did not enter or ask to enter the backyard, the sheriff said.



"We should have been more inquisitive, more curious, and turned over a rock or two," the sheriff said. "We missed an opportunity to bring earlier closure to this situation."



Dugard lived for 18 years in a shed and other outbuildings behind her abductor's house, where she gave birth to two girls whom he fathered; the girls are now 11 and 15, police said.



CNN policy is not to publish the names of victims when there are allegations of sexual assault. In this case, Dugard has been the subject of a 20-year public search and her image and name have been widely disseminated, making protection of her identity virtually impossible.



Dugard was kidnapped in 1991 as her stepfather watched, helpless, in front of her house in South Lake Tahoe, California.  Learn about some missing children who have been found alive »



Investigators arrested Garrido on charges of kidnapping and abusing her after police discovered Dugard on Wednesday.



"The last 18 years have been rough, but the last two days have been pretty good," her stepfather, Carl Probyn, told CNN's "American Morning" on Friday.  Watch Probyn describe getting the news »



Phillip Garrido, 58, and 54-year-old Nancy Garrido were arraigned Friday in Placerville Superior Court in Placerville, California. They pleaded not guilty Friday.



During their time living in Garrido's backyard, Dugard and her two children apparently rarely ventured out of their compound, investigators said.



Dugard "was in good health, but living in a backyard for the past 18 years does take its toll," El Dorado County Undersheriff Fred Kollar said.



He described her as "relatively cooperative, relatively forthcoming" in discussions with detectives. She was "in relatively good condition," neither obviously abused nor malnourished, he added. "There are no known attempts by her to outreach to anybody."



The
where the victim reportedly kept what did the wife plead What did the police say about Garrido? For what reason did authorities acquire a search warrant? Who plead not guilty? Where was the victim reportedly kept?
in their backyard not guilty "We took things he said obviously at face value and in connection with killings that occurred in the 1990s, Nancy Garrido their backyard
question: where the victim reportedly kept, answer: in their backyard | question: what did the wife plead, answer: not guilty | question: What did the police say about Garrido?, answer: "We took things he said obviously at face value and | question: For what reason did authorities acquire a search warrant?, answer: in connection with killings that occurred in the 1990s, | question: Who plead not guilty?, answer: Nancy Garrido | question: Where was the victim reportedly kept?, answer: their backyard