California authorities say they have rescued more than a dozen starving, filthy young people who were chained inside their parents’ home in Perris.

One of the captives, a 17-year-old girl, escaped over the weekend and notified the Riverside Sheriff’s Department that her siblings “were being held captive inside the residence by her parents,” some of them “bound with chains and padlocks,” the Sheriff’s Department said.

Initially, officials believed the “slightly emaciated” teenager was only 10 years old. They confronted a horrific scene at her home, according to a press release.

“Further investigation revealed several children shackled to their beds with chains and padlocks in dark and foul-smelling surroundings, but the parents were unable to immediately provide a logical reason why their children were restrained in that manner,” the department said.

“The victims appeared to be malnourished and very dirty,” the department said.

Not all of them were children: of the 13 victims, seven were between the age of 18 and 29, much to the shock of the Sheriff's Department.

After interviewing both parents — identified as 57-year old David Allen Turpin and 49-year old Louise Anna Turpin — authorities arrested them on torture and child endangerment charges, setting bail at $9m (£6.5m) apiece.

"The kids didn't come out very often," neighbours told NBC Los Angeles. None knew exactly how many children were in the house.

Another, who saw the couple being arrested, said the children "were very, very pale-skinned, almost like they've never seen the sun."

Turpin family: 13 siblings who were held captive by their parents Show all 15 1 /15 Turpin family: 13 siblings who were held captive by their parents Turpin family: 13 siblings who were held captive by their parents David and Louise Turpin with their 13 children who were being held captive by their parents in the family home in Perris, California. Facebook Turpin family: 13 siblings who were held captive by their parents Riverside County District Attorney Mike Hestrin speaks during a press conference announcing charges against David Turpin and Louise Turpin in relation to their 13 malnourished children found chained in their home, in Riverside. The two parents were charged with multiple counts of Child abuse, torture, abuse of dependent adults and false imprisonment and could face close to 100 years to life in prison if convicted. EPA Turpin family: 13 siblings who were held captive by their parents The home of David Allen and Louise Anna Turpin, where some of their children were bound with chains and padlocks. Reuters Turpin family: 13 siblings who were held captive by their parents David Allen Turpin poses for a mugshot after being arrested. Riverside County Sheriffs Department via Getty Turpin family: 13 siblings who were held captive by their parents One of the captives, a 17-year-old girl, escaped over the weekend and notified the Riverside Sheriff’s Department. Facebook/David-Louise Turpin Turpin family: 13 siblings who were held captive by their parents Perris residents watch as media gather in front of Turpin family home. The Sheriff's deparmtent said "the parents were unable to immediately provide a logical reason why their children were restrained in that manner." AFP/Getty Turpin family: 13 siblings who were held captive by their parents The children were found in dark and foul-smelling surroundings and "The victims appeared to be malnourished and very dirty,” the department said. Facebook/David-Louise Turpin Turpin family: 13 siblings who were held captive by their parents Neighbours stand outside the home. Getty Turpin family: 13 siblings who were held captive by their parents Louise Anna Turpin poses for a mugshot after being arrested. Not all of their victims were children: of the 13 victims, seven were between the age of 18 and 29, according to the Sheriff's Department. Riverside County Sheriffs Department via Getty Turpin family: 13 siblings who were held captive by their parents David and Louise Turpin in 2015. Authorities arrested them on torture and child endangerment charges, setting bail at $9m (£6.5m) apiece. Facebook/David-Louise Turpin Turpin family: 13 siblings who were held captive by their parents David Turpin and Louise Turpin appear in court for their arraignment in Riverside Reuters Turpin family: 13 siblings who were held captive by their parents David Allen Turpin and his wife, Louise Anna Turpin celebrate a renewal of their wedding vows with Elvis impersonator Kent Ripley in Las Vegas in 2011 A Elvis Chapel via AP Turpin family: 13 siblings who were held captive by their parents David Allen Turpin appears in court for his arraignment in Riverside. Prosecutors filed 12 counts of torture, seven counts of dependent adult abuse, six counts of child abuse and 12 counts of false imprisonment against Turpin and his wife, Louise Anna Turpin. The Press-Enterprise via AP Turpin family: 13 siblings who were held captive by their parents Neighbour Liza Tozier, and her son, Avery Sanchez, 6, drop off his large "Teddy" as a gift for the children. AP Turpin family: 13 siblings who were held captive by their parents Louise Turpin appears in court for her arraignment in Riverside. Authorities say the abuse left the children malnourished, undersized and with cognitive impairments. Reuters

California records indicate that a David Turpin received state approval to open a private school, the Sandcastle Day School, which reportedly operated from the family home according to CNN. A representative for the California Department of Education did not immediately respond to a request for comment.

Th Turpins had moved into the Perris home in 2010, but by 2011 had declared bankruptcy.

The attorney who represented the couple, Ivan Trahan, told CNN "there was nothing out of ordinary" about to couple who did not seem distressed about the bankruptcy and appeared to dote on their 13 children, even showing Mr Trahan pictures of family trip to Disneyland.

In fact, the family had taken several family trips - notably three in 2011, 2013, and 2015 to Las Vegas in order for the couple to renew their vows.

In all the family pictures, the girls and boys wear matching clothes, respectively, and appear to be healthy and smiling.

Mr Turpin is listed in the public bankruptcy records as an engineer for Northrop Grumman, making approximately $140,000 a year. Ms Turpin is listed as a "homemaker."

However, the couple came to Mr Trahan with over $240,000 in debt from credit cards and a foreclosed farm in Texas.

All 13 victims are currently being treated in area hospitals. The names of the other adults in the home have not yet been released.