Jace Crehan told sheriff’s detectives his fiancée, Brittany Monk, was with him July 4 when he stabbed her convicted molester Robert Noce Jr. six times inside his Zachary trailer, strangled him with a belt and pulled him inside a 55-gallon plastic drum, according to newly released documents.

Crehan also admitted they entered the trailer while the 47-year-old Noce slept in his bedroom, climbing through a window after Crehan used a screwdriver to remove an air-conditioning unit, according to the records filed as part of the second-degree murder case.

After the killing was complete, Crehan told East Baton Rouge Parish sheriff’s detectives he clogged every drain in the trailer and turned the faucets on to flood the residence and cover their tracks.

Monk’s DNA was discovered on a pair of rubber gloves found inside the blue drum, the records show. Crehan, 21, and Monk, 18, both of Walker, were indicted in September.

The documents, some of which are stamped CONFIDENTIAL, were filed into the court record last week by prosecutor Darwin Miller.

Crehan’s attorney, Carson Marcantel, said Tuesday he had no comment on the latest filing from prosecutors because he had not yet reviewed it. Monk’s attorneys declined comment.

Crehan’s statement to detectives was given July 8. He told them he threw the knife into a pond in Denham Springs.

“It should be noted that Crehan concluded by saying that after returning home and sleeping for several hours, he asked Monk how was she feeling, and she replied ‘Better’,” Lt. Leonardo Moore writes in the documents.

Crehan began his statement by saying he was upset that Noce received only five years of probation for what he did to Monk when she was a child.

“It also upset him when Monk told him that Noce had a fetish for her,” Moore states in the documents.

Crehan admitted Monk was at the crime scene only after he was informed that her DNA was located inside Noce’s trailer, the records state.

A July 20 search warrant application included in the documents states that a “significant struggle” occurred inside the trailer.

Crehan told detectives he ran into Noce’s bedroom and pulled him out of the bed onto the floor in an arm chokehold. When Noce passed out, Crehan tried to tie his hands behind his back, but after tying the knot wrong he asked Monk to hand him a knife.

“While attempting to cut the ties Noce woke up. They began fighting on the floor in front of the bed. He began getting tired and Noce appeared to be motioning in Monk’s direction,” Moore writes. “That is when he stabbed Noce once in the back of the neck, 2 times on the left side of his neck and 3 times on the right side.

“At that moment he placed a belt around Noce’s neck and began strangling him,” the detective adds. “Monk appeared to be having a panic attack asking him why ‘Jace.’”

Crehan called in sick to work on the morning after the slaying, the application says. He also admitted that, prior to the killing, he researched various Internet sites for statistics related to unsolved homicides.

Detectives also videotaped Crehan demonstrating how he stabbed Noce.

Bail for Crehan and Monk is set at $400,000 apiece. Monk is trying to have her bail reduced.

Noce died less than two weeks after he was put on probation for sexually abusing Monk. He was the former boyfriend of Monk’s mother.