Pittsburgh ? A western Pennsylvania mother has been charged with giving her 13-year-old daughter drugs and alcohol so the woman’s boyfriend could impregnate the girl without her knowing, police said Thursday.

Shana Brown, 32, is no longer able to have children but wanted to have a baby with her current boyfriend, Duane Calloway, said Uniontown Police Detective Donald Gmitter. The pair decided to drug the girl so Calloway, 40, could have sex with her, he added.

“There’s some sick people on this case,” Gmitter said.

Brown has been charged with endangering the welfare of a child, turned herself in Thursday and was being held in the Fayette County jail, police said. Brown’s attorney did not return a call for comment.

Calloway faces several counts of attempted rape.