A 12-year-old girl who was held captive for a week in a mobile home with the dismembered remains of her mother and brother provided key information that led to the arrest of the woman’s live-in boyfriend, authorities said Thursday.

Discovered along a country road by a passerby following her escape on Monday, the child is now safe in the custody of state child welfare officials.

José Paulino Pascual-Reyes, 37, was charged with kidnapping and multiple counts of capital murder in the slayings of the girl’s mother, 29-year-old Sandra Vazquez Ceja, and her son, who court records show was younger than 14.

The kidnapping charge alleges that the girl was held hostage against her will, not that she was physically abducted from elsewhere and taken to the home, Abbett said.

The girl was taken captive on July 24 around the time her mother and brother were killed, authorities allege, and police found two dismembered bodies in the mobile home after the child escaped on Monday morning. Abbett declined to comment on whether the girl knew the fate of her mother and brother while she was still a hostage, but the chopped-up remains were found inside the home.