OGDEN -- The case of the body buried in the Roy back yard has been resolved, prosecutors say.
The body was there nine months, which complicated things enough that it was another 18 months before charges could be filed, according to the Weber County Attorney's Office.
Charges of manslaughter and desecration of a human body were filed last week against Daniel Rivera, 34, in the death of Victor Flores, 25.
Flores' body was unearthed by authorities Feb, 10, 2012, in the back yard of Sarah Munn. Munn, Rivera's girlfriend, has had three children by him.
Flores was a California resident who had moved to Utah and was reported missing by his family in May 2011. Police have said he was last seen with Rivera on May 9, 2011 -- which is the exact date of his death listed on the manslaughter charge filed against Rivera in 2nd District Court.
But prosecutors aren't saying much more before what they expect will be a plea bargain announced at Rivera's Sept. 25 arraignment.
"We're not commenting on the facts of the case before then," County Attorney Dee Smith said Friday.
Rivera is already in prison, serving up to five years for escape from official custody. Rivera skipped out on a Weber County Jail work release program in August 2011, eventually arrested in Wyoming last year and sent to prison.
Munn's prosecution is still pending in 2nd District Court, although she hasn't been charged directly in Flores' death.
On that same crucial May 9, 2011, date, Rivera was treated for a cut to his face in Layton that required 35 stitches, aspects of the case pursued by Layton police.
Prosecutors Friday would only say that wound from the unspecified conflict with Flores had an impact on the decision to file the lesser charge of manslaughter against Rivera, rather than murder. They wouldn't detail what transpired between the two men, even to enlarge on the police statement issued shortly after Flores' body was found that said he was stabbed to death.
That month, Munn was charged with obstruction of justice for changing stories in trying to cover for the May 9, 2011 cut to Rivera's face.
Munn initially told investigators that Rivera had been hurt in a road-rage incident, then later said she caused the injury, only to recant again and provide a third unspecified version, according to charging documents.
Deputy Weber County Attorney Branden Miles did say Friday that the difference between manslaughter and murder is about intent.
"It's the difference between knowingly and intentionally causing a death and recklessly causing a death," he said.
He and Smith said the fact Rivera was already in prison allowed investigators to take the time to tie up all loose ends, something normally still under way right up to trial.
Also, crime lab testing was lengthy in the case, they said, some analysis taking a full year.
"He was missing for a long time before they found the body," Smith said. "Which complicates it. You have to go back in time."
As to what led police to the body, Smith said, "I can't say, other than just good police work."
Rivera rented a tractor that was used to dig a hole in the back yard of Munn's home on May 10, 2011, according to charging documents. May 10 is the date listed in the charge against Rivera alleging desecration of a corpse. The charge includes wording alleging hiding a body.
Munn told police she was present when the hole was dug for the purpose of placing a trampoline at ground level, court files say. She said the hole was later filled in because it had been dug the wrong size, according to a probable cause affidavit.
Contact reporter Tim Gurrister at (801)625-4238, firstname.lastname@example.org. Follow him on Twitter at @tgurrister