A man and woman from western Montana have been charged in the stabbing deaths of two people whose bodies were found in plastic tubs of chemicals in the basement of a Missoula home.

Tiffanie Pierce, 23, and Augustus Standingrock, 26, were arrested last Thursday and made their initial appearances in Justice Court on Monday, at which time their bail was set at $2millon.

Both are charged with deliberate homicide and accountability to deliberate homicide for the deaths of a man and a woman on August 17. They did not enter pleas.

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Pair charged: Augustus Standingrock (left), 26, and Tiffanie Pierce (right), 23, are accused of stabbing to death two people in Montana on August 17

Grisly scene: Police discovered the bodies in plastic tubs filled with chemicals while searching this home in the 1900 block of Strand Avenue in Missoula

Gory evidence: The search also turned up knives and an ax covered in blood and suspected human tissue at the scene

'There's no combination of [release conditions] that would ensure that members of our community would be safe,' Missoula County Attorney Kirsten Pabst told Justice of the Peace Marie Andersen on Monday.

Pierce and Standingrock tried to destroy the bodies of the victims by putting them in tubs with chemicals that prosecutors say were purchased by Pierce, prosecutors said.

Police discovered the bodies while executing a search warrant at 6pm on Thursday at a home in the 1900 block of Strand Avenue.

The search also turned up knives and an ax covered in blood and suspected human tissue at the scene.

Pierce's roommate told a police informant that he was awakened by a woman's screams and found Pierce and Standingrock in the bathroom washing blood off themselves before Pierce told him there was a dead woman in the basement, reported KRTV3.

The roommate told them he did not want to know anything and left but said Pierce showed up at his work, 'freaking out,' and told him she 'killed a couple people last night,' according to court records.

Witness: A roommate of the couple said he found Pierce and Standingrock in the bathroom washing blood off themselves

First appearance: Pierce (left) and Standingrock (right) appeared in court Monday, at which time their bail was set at $2millon

Pierce reportedly told her roommate that Standingrock brought a couple of people over and that he took them to the basement and attacked one.

Pierce attacked the other person, who had tried to get away, the roommate told investigators.

The initial investigation found both victims died of stab wounds.

Pierce also is being investigated in a home invasion and stabbing that happened on July 23, according to a search warrant application filed by Missoula police.

The victim in that case survived and told investigators that a woman, later identified as Pierce, broke into her home in the 1300 block of Montana Street and proceeded to repeatedly stab her in the neck, face and stomach as she slept. She then asked her several times, 'Where's the money, where's the drugs?'

Court records cited by NewsTalk KGVO indicate that Standingrock has been in trouble with the law in the past, including five years ago when he was arrested for beating a man with a crowbar and trying to stab him.

Then in 2015, he was accused of kicking and punching police officers who were trying to take him into custody for violating the conditions of his parole.