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.
Pascual-Reyes was arrested Monday night while working at a construction site in Auburn, more than 32km from the mobile home. He is being held without bail.
Defence attorney Mark Carlton said he and another lawyer had just been appointed to represent Pascual-Reyes and declined immediate comment, saying they'd yet to have a chance to meet with him.
Reyes, who is from Mexico, was in the country illegally after being deported and returning without proper documentation, Abbett said. It wasn't clear when he last entered the United States, said the sheriff, but the group had been living in the mobile home since February.
Ceja and the two children entered the United States from Mexico in 2017 and remained after requesting asylum, but their claims had yet to be decided by immigration officials, the sheriff said.
While a few other people live near the mobile home and others had lived at the residence, there's no indication anyone else knew about the killings or that the girl was being held against her will, Abbett said.
"No one has come forward with information," he said.