FARMINGTON -- A 31-year-old man used a hammer to disfigure the face and teeth of a 4-year-old boy to delay identification of his body, according to a probable cause statement released by the Davis County Sheriff's Office.
The probable cause affidavits were filed by Layton Police Department for Nathanael Warren Sloop and Stephanie Christine Sloop, 27, the mother of Ethan Stacy.
The sheriff's corrections division released the affidavits following open records requests by the Standard-Examiner and other media.
Ethan's body was found late Tuesday afternoon, buried near Powder Mountain.
Both affidavits are two pages long and each briefly outline the police investigation into how the boy died.
Davis County Attorney's Office plans to file formal charges in 2nd District Court on Friday against Nathan Sloop and Stephanie Sloop. A press conference will be held at 11 a.m. Friday to discuss what the exact charges will be, said Davis County Attorney Troy Rawlings.
"We are truly sorry for the family of Ethan Stacy and will be mindful of them as this case progresses," Rawlings wrote in press release sent out Wednesday.
According to the affidavits, police recovered photo images of Ethan from a cell phone that "showed a progression of injuries to the child on the head and facial area."
A custody fight in Virginia led to a judge's order that the 4-year-old boy spend the summer in Utah with his mother, police said Wednesday.
The biological father of Ethan Stacy received a full briefing on the slaying Wednesday, he told The Associated Press.
"I can't talk right now. I just got the horrible news, talking to prosecutors," said Joe G. Stacy of Tazewell, Va. "Right now is not the time."
Ethan arrived in Utah on May 1, flying here from Florida with his mother, according to a press release.
An autopsy was conducted Wednesday at the state medical examiner's office.
The Sloops are currently booked in the Davis County Jail. Nathan Sloop on booked in aggravated homicide, felony child abuse, obstruction of justice, desecration of a corpse and damaging a jail.
The damaging a jail charge stems from damage Sloop caused to a holding cell at the Layton Police Department, according to a police press release.
Stephanie Sloop is booked on felony child abuse, obstruction of justice and desecration of a corpse.
According to a clerk at the Davis County clerk/auditor's office the two were married on May 6 at the Davis County Memorial Courthouse.