Police found the body of Linda Damm, also known as Linda Juergen, on Feb. 28 in the back of a Subaru in the garage of her house after receiving an anonymous tip.
Shortly after the discovery of her body, police arrested three teenage suspects. A fourth suspect, 18-year-old Jared Sajal Guy, was arrested Friday.
All four teens appeared in Boulder District Court Wednesday.
One of the teenage suspects, 15-year-old Tess Damm who is the daughter of Damm, will be charged as an adult on three counts of conspiracy to commit murder in the first degree, accessory to a crime and tampering with physical evidence. She will be held in a juvenile detention center.
Tess' 17-year-old boyfriend Bryan Grove, who will turn 18 shortly, will also be charged as an adult on charges of murder in the first degree, conspiracy to commit murder and tampering with physical evidence.
Both suspects will have a preliminary hearing May 21.
The third teen suspect will be charged Mar. 16 at 2:30 p.m. as the filing of his charges has been extended for one week.
Guy, who has been charged with accessory to murder, will have a bond hearing Tuesday at 8:15 a.m. A tentative date for his preliminary hearing has been set for Mar. 26.
More details about the murder were released Wednesday in Grove's arrest affidavit.
Initially, Grove maintained Damm was missing and then agreed to tell police the truth in a videotaped interview.
Grove says he and Damm got into an argument. Grove says Damm said the problems between her and her daughter were because of him. He says he told Damm that her problems with alcohol were causing the problems.
He says he told her that "the next thing she better say needed to be something positive or an apology."
Instead, Grove told police Damm said if Tess had never been born, none of this would have happened, meaning Grove living in her home.
Grove says the argument escalated to the point where he grabbed Damm by the throat and pushed her against the wall. He says she hit him in the head and he forced her down on the bed face down. He then says he put her in a choke hold and suffocated her until she went unconscious.
In the affidavit, Grove told police Linda was still breathing so he picked up a knife and stabbed her in the neck far enough so he could not pull it out. She was still breathing, so he told police he got larger knife and stabbed her several more times. He says he twisted the knife to do more damage and then stabbed her in her open mouth until she stopped breathing.
He told police he then wrapped her in blankets and put her in the back of the Subaru in the garage.
At one point, Grove told police he thought of cutting the body up to make it easier to get rid of. Police say that is why there is a large cut on her leg where he tried to cut it off.
Additional details about the murder were released Tuesday in Guy's arrest affidavit.
In the affidavit, Guy told police what Grove had recounted to him after the murder. According to Guy, Damm was choking Tess so Tess' boyfriend Bryan, threw Damm off of her and then she came at Bryan with a switchblade knife. Guy says Bryan then took the knife from Damm and stabbed her with it.
According to the arrest affidavit, Bryan "tried to be ‘up beat' to make things more comfortable" for the victim's daughter. Guy says the boyfriend made the statement, "The house is mine now."
However, later Guy says the Bryan broke down and was crying. According to Guy's statements in the affidavit, Bryan "made the statements, ‘I f----- up,' ‘I feel horrible,' ‘I don't know what is going to happen.'"
In the affidavit, Guy told police he had urged Bryan to turn himself in, saying, "If his account of what happened to Linda was true, he had nothing to worry about because it was self defense, and he should go straight to the police with what happened."
Later in the interview, Guy told police Bryan asked for his help in taking the body to a landfill. Guy says he went with him, who was driving the body in the Subaru, as Guy tailed him in an Acura.
In the affidavit, Guy says when they arrived at the Erie landfill, they got the car stuck in the mud because it had recently snowed and then decided not to dump the body and returned to the house in Lafayette.
Guy told police roughly one week after the murder he helped the suspects bury Damm's body in a nearby cemetery. Fearing they had been seen by local law enforcement they fled the scene. However, the group returned hours later, dug the body up and returned it to the home.
Guy told police he thought they began digging the hole at about 11 p.m. and finished burying the body at about 1:30 a.m. when they were spooked by what they thought was an officer. Guy says they recovered the body before sunrise.
According to Guy's statements to police, he believed they buried the body on February 6, 7, or 8 because he remembered having a conversation about Valentine's Day being the following week.
Guy told police he believed the murder must have taken place on January 27 or 28 based on how the body looked when he first saw it.
In the affidavit, Guy says he was first shown the body in the back of the Subaru, shortly after murder. He says he was skeptical about the killing and Bryan showed Guy the body as proof.
Guy told police he "did not believe him and told him to prove it. (Bryan) then opened the car and lifted the sheet so that he could see Linda."
Guy described the body as "not a pretty sight," and said it was "really bloody," according to the arrest affidavit.
Two of the teens being held in the case have mentioned the murder on their MySpace.com pages.
9NEWS Legal Analyst Scott Robinson says all of their statements, both online and made directly to police officers, could end up in court.
"Prosecutors will surely use any statements that were made by the suspects about the killing that appeared on the MySpace postings. If they said it, it could be used against them," he said.
The Boulder County Coroner says it will be four to five weeks before a complete autopsy report will be finished. The coroner says the autopsy report will include a toxicology report.
To view Guy's complete affidavit, click here.