The foster parents who took in several of the Turpin children after they were rescued from their home of abuse in 2018 were sentenced on child abuse charges Friday.

Marcelino Olguin was sentenced to seven years in state prison, while his wife and daughter got suspended sentences. All three pleaded guilty to multiple charges, including false imprisonment.

California officials say they're frustrated in their efforts to find out why social services systems have "harmed" some of 13 Turpin children following their 2018 rescue.

Some of the siblings who were rescued from captivity from their parents' home are now alleging they were victims of abuse at the hands of a foster family with whom they were placed.

Six of the 13 Turpin siblings who were rescued in 2018 from their parents' California home have filed suit against their county and others tasked with protecting them.

Six of the 13 Turpin siblings, who were rescued in 2018 from their parents' home, have now filed a lawsuit alleging they suffered "severe abuse and neglect" in foster care after their rescue.

In a new lawsuit, attorneys for the six youngest children of the Turpin family say that the foster family who was paid to raise them after they were rescued was also abusive.

A new report details how social services failed to protect 13 siblings who escaped their parents’ home after being held captive for years. ABC News’ Andrea Fujii reports.

Residents confronted Riverside County officials after investigators outlined how the county failed to adequately care for the Turpin siblings following their 2018 rescue.

The 13 Turpin siblings, rescued in 2018 from their parents' California home, were "failed" by the social services system, said a report issued by outside investigators.

Months after investigators began probing alleged failures in the care of 13 Turpin children, they say they still can't access needed records due to confidentiality rules.

A top county official reacted to the revelations of abuse endured by the Turpin siblings.

Vanessa Espinoza wrote in a statement that she will cooperate with an investigation into the treatment of the Turpin siblings, after they were put into county care.

Some of the adult Turpin children who were put into conservatorships told ABC News that the public guardian office often didn’t help them with their basic needs.

Jennifer and Jordan Turpin say they are overwhelmed by the outpouring of support after the "20/20" special aired.

"I just felt like I had to do it," Jordan Turpin said.

"I danced,” said Jennifer Turpin.

"My two little sisters right now are chained up," Turpin told the dispatcher.

New details were revealed Friday about an independent probe into the treatment of the Turpin siblings since their dramatic 2018 escape from captivity.

Seventeen-year-old Jordan Turpin escaped her parents' filthy Perris, California, home and dialed 911.

Jennifer and Jordan Turpin share their stories for the first time.

Nearly four years after the 13 Turpin siblings were rescued from their abusive parents, an ABC News investigation finds that some of them continue to face hardships.

The Turpin siblings say they are still struggling to access basic living necessities.

When Jordan and Jennifer Turpin's exclusive interview with ABC News' Diane Sawyer aired this weekend, Jordan Turpin said "it was really hard for me to watch."

The Turpin siblings are still picking up the pieces, nearly 4 years after escaping from their Perris, California home and a life of abuse at the hands of their parents.

Diane Sawyer reports on 13 California siblings who were abused and held captive by their parents for more than a decade.

On the night of Jan. 14, 2018, 17-year-old Jordan Turpin made a daring escape from her home and called 911 in order to save herself and her siblings from their abusive parents.

Once law enforcement arrived, Jordan Turpin showed them pictures of her siblings in chains on a phone she had kept secretly from her parents. Officers perform a welfare check at the Turpin house.

Jennifer Turpin, the eldest child of David and Louise Turpin, recalls her parent’s violent outbursts, especially her mother’s volatile mood swings, extreme punishments and abandonment in a trailer.

David and Louise Turpin occasionally took their children out to take posed photographs to portray a happy family. In reality, the 13 children were starved, tortured and filthy.

After Jordan Turpin was outed secretly watching a Justin Bieber music video, her mother violently choked her. After that, she decided to begin planning an escape.

By January 2018, the Turpin parents had chained a few of their children. Jordan overheard her parents’ plan to move the family to another state and realized the time for an escape was now or never.

David and Louise Turpin are arrested after officers find a child who was chained to a bed, and two others who had just been released from chains. All 13 children are taken to the hospital.

David and Louise Turpin pleaded guilty to 14 felony counts in 2019 and were sentenced to life in prison with the possibility of parole.

Jennifer, Jordan and Joshua Turpin said they've had difficulties with accessing basic necessities such as safe housing and access to financial support from officials in charge of their case.

Nearly four years after the Turpin children were freed, Jordan and Jennifer Turpin are focused on becoming independent young women and plan to work hard toward their own big dreams.

Diane Sawyer talks to Jordan Turpin about growing up under her abusive parents' rule, and how she gathered the courage to escape imprisonment and rescue her 12 other siblings.

In 2018, Jordan Turpin crawled out a window to alert authorities that her parents, David and Louise Turpin, were abusing her and her 12 siblings, including chaining the children to their beds.

Diane Sawyer previews her remarkable ABC News exclusive with the Turpin children, who were held captive by their parents for years.

Diane Sawyer shares a never-before-seen look at body camera video revealing Jordan Turpin’s encounter with a deputy the morning she escaped imprisonment by her parents.

In an exclusive interview with ABC News’ Diane Sawyer, Jennifer and Jordan Turpin describe when they realized for the first time that their imprisonment by their parents was over.

In 2018, 17-year-old Jordan Turpin had only been outside a few times in her life. Thinking of her siblings chained back at the house, she dialed 911 on an old cell phone her parents didn't know about.

The children of the Turpin family recount to ABC News' Diane Sawyer a life of brutality at the hands of their parents and how they managed to escape.

David and Louise Turpin were arrested in Perris, California, in January 2018.

David and Louise Turpin were sentenced on Friday for torturing and imprisoning their children for years.

The house where 12 California children were allegedly tortured and held captive by their parents may have some new occupants soon.

The California home was the site of alleged torture and abuse for years.

The 17-year-old daughter of David and Louise Turpin told 911 her parents were abusive and that she and her siblings were chained up when they misbehaved.

A 17-year-old girl, one of the 13 children held captive and tortured by her parents in California, told a 911 operator about the horrors she experienced. ABC News' Diane Macedo reports.

The 13 Turpin siblings were found in January and their parents were arrested.