A California couple has been arrested after authorities found a dozen malnourished siblings held captive in their home, some shackled in the dark to their beds with chains and padlocks, officials said Monday.

Authorities launched a torture probe and set bail at $9 million for the parents after a 17-year-old girl escaped the house on Sunday and called 911.

The 13 victims who had been held captive at the Perris, California home range in age from two to 29, the Riverside County Sheriff's Department said in a statement.