A woman from Alaska has admitted to the murder of her "best friend," reportedly in exchange for millions of dollars promised to her online for filming the killing.

In June 2019, Cynthia Hoffman, aged 19, was killed by Denali Brehmer, who has now confessed to committing first-degree murder at the age of 22.

The Alaska Department of Law has reported that on Wednesday, February 15th, Brehmer pleaded guilty, having stated that she was offered $9 million by a man online to take pictures and videos of herself committing murder.

According to court documents, Brehmer claimed that her motive for fatally shooting Hoffman in the back of the head and subsequently disposing of her body in the Eklutna River was due to the promise of receiving $9 million for committing the murder.

Superior Court Judge Andrew Peterson promptly accepted the guilty plea.

When Brehmer committed the crime at 18 years old, she was romantically involved with a man named 'Tyler', who represented himself as a multimillionaire from Kansas.

Authorities have stated that the man posing as 'Tyler', who was actually a 21-year-old from Indiana, was named Darin Schilmiller.

Reportedly, the two individuals conspired to commit various crimes in return for financial compensation, including the sexual assault and murder of an Alaskan individual.

Although Brehmer purportedly agreed to carry out the act, she reportedly enlisted the help of Kayden McIntosh (who was 16 years old at the time) and Caleb Leyland (who was 19 years old at the time), promising them a substantial payment for their involvement.

Law enforcement officials stated that the group lured their target to Thunderbird Falls under false pretenses, promising a hiking excursion, before restraining and ultimately shooting her.

Additionally, authorities reported that Brehmer sent images and videos of the crime in progress to Schilmiller.

Although Schilmiller allegedly requested that the woman be sexually assaulted, there is no evidence to suggest that this occurred.

After committing the crime, the group contacted the victim's family and falsely claimed that they had dropped her off at a park, while also disposing of some of her belongings in an attempt to evade detection.

According to a statement released by the Alaska Department of Law, Brehmer has acknowledged the details outlined in the original complaint filed in the case.

Brehmer's three-day sentencing is scheduled for August of this year.

The charges of conspiracy to commit murder in the first degree, solicitation of murder in the first degree, tampering with physical evidence, and two counts of second-degree murder against Brehmer were dismissed.

Schilmiller, on the other hand, was taken into custody in August 2019 and faced charges of first-degree murder and conspiracy to commit murder.

He is currently awaiting trial.

The charges against McIntosh and Leyland are still pending.

Timothy Hoffman, the father of Cynthia Hoffman, stated: "All I know is that my daughter didn't deserve all this."