Lisa Marie Presley's twin daughters Finley and Harper have been taken from their parents by California's Department of Children and Family Services, according to a new report.

The eight-year-old girls are allegedly victims of sexual abuse by their father, Marie's estranged husband Michael Lockwood, discovered when Lisa Marie found a stash of disturbing photos and videos of the children on Lockwood's computer.

In the couple's ongoing divorce battle, Presley has filed papers saying, "I was shocked and horrified and sick to my stomach." Apparently Tennessee law enforcement, in addition to the Beverly Hills Police Department, are investigating the musician, 55, who has worked with the likes of Fiona Apple and Aimee Mann.

Lisa Marie, daughter of Elvis Presley, claims nearly all of her $300M fortune is gone and says she is unable to pay the $40K/mo spousal support and $100K in legal fees that Lockwood is demanding. She receives a reporting $100K/mo from a trust fund Elvis set up for her and another $4300/mo from a "job" she holds at Graceland, the family's former home now opened as a tourist destination.

Lisa Marie checked into a rehab facility last August shortly after her split from Lockwood and claims she's now living, rent-free, her daughter Riley's home, with the young actress and her husband.

Regarding the allegations of Lockwood possessing sexually-explicit photos of the former couple's daughters, Presley's legal papers state: "While the Respondent [Lockwood] has not yet been convicted of crimes related to his possession of these photos, that he possessed them is documented evidence of conduct that has destroyed the mental or emotional calm of Petitioner, and, as in Schu, is domestic violence "by an reasonable definition of the term."

Presley's testimony states: "I have no idea what else may be on those devices and fear that there are more and worse images and evidence in these un-analyzed devices."