BUTLER TWP — Butler County District Attorney Richard Goldinger said today that he expects to file criminal charges against Keith Jordan Lambing and his mother, Kristen Herold, within the next 24 hours.

Goldinger, who said that Lambing is now considered a suspect, said the exact timing and nature of charges against the pair, who were arrested Wednesday afternoon after being found hiding in a home on Walker Avenue, would depend on how an investigation by Butler Township police proceeds.

Police remain tight-lipped about their investigation into the death of 4-year-old Bentley Thomas Miller.

“We have more investigating to do and when there are developments in the case, we will release that,” said Butler Township police Lt. Matthew Pearson.

Lambing, 20, was caught hiding in a closet ceiling. His mother, Kristen Herold, 43, of Butler, and three other men were also found in the home.

Police were anxious to speak to Lambing since he was taking care of Bentley at a Butler Township motel shortly before the boy died.

“We're going to be busy doing this for weeks,” Pearson said of the investigation.

He said investigators are also awaiting lab results of forensic evidence collected in the case.

Lambing remains in the Butler County Prison on a bench warrant in an unrelated case. Herold also is in the county prison for failing to make court-ordered payments in a 2014 shoplifting conviction.

Goldinger said he expects both to remain in jail as the investigation proceeds. According to county court administrators, Lambing is expected to have a hearing on his bench warrant sometime Friday.