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A West Virginia mom shot her three sons and two stepchildren before she burned down their home and committed suicide in December, police said on Thursday.

According to police, Oreanna Myers, 25, shot all five children in the head with a shotgun on Dec. 8. Greenbrier County Sheriff Bruce Sloan said the children were found inside the home while Myers was found outside.

Investigators believed that Oreanna Myers shot the children inside the house, then walked outside before shooting herself. It left Myers' three children and two stepsons from her husband's previous marriage dead, New York Post reported. 

The children were identified as Haiken Jirachi Myers, 1; Aarikyle Nova Myers, 3; Kian Myers, 4; Riley James Bumgarner, 6; and Shaun Dawson Bumgarner, 7. 

New York Daily News reported that Oreanna Myers left three separate notes beside her body. In one note, she admitted that she shot all the children "in the head" before she "set house on fire" and shot herself "in the head."

She said that her "demons" won over her because she was not strong enough. She also said sorry for the "evil crime" she committed.

Oreanna Myers' Husband Was Absent on Fatal Day

Myers' husband, Brian Bumgarner, lived in Williamsburg, West Virginia, about 30 miles from the Virginia state line.

At the time, Bumgarner was staying with relatives for that workweek because their car broke down, and he needed a means of transportation, said a report from CBS Pittsburgh.

Authorities noted that based on text exchanges between Oreanna Myers and Bumgarner, the absence became "a tremendous source of contention."

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In one message found by the police, Oreanna Myers said: "You'll have nothing to come back to but [a] corpse. No one cares why should I?" She added that money would "come and go," but "once I go there's no replacing me."

It appeared she was upset in the past weeks as her husband had to stay away from them while she was left alone with the children.

Sloan said they are unaware if the woman was under treatment for any kind of mental illness at the time of the horrific massacre. But Oreanna Myers said in a text that her mental health "needs tending to," and she asked for help.

She appeared to have no history of mental health issues, as per the police's investigation. Neither Bumgarner nor Myers was in contact with Child Protective Services. 

Oreanna Myers Left Grim Note Regarding Murder-Suicuide

According to the New York Post, Oreanna Myers picked up her two sons from the bus stop at the end of the school day with a red line drawn across her face. When the boys asked her if she was bleeding, she said she drew it.

About an hour later, a 911 call reported that the family's home was engulfed in flames. The three separate notes left beside Myers' body included the graphic description of what she did to the children and herself. 

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She also wrote about mental health in one of the notes, saying it was serious and hoping that "people like her" would get help from others. 

"Mental health is not to joke about or taken lightly. When someone begs, pleads, cries out for help, please help them," she implored. She didn't place blame on anyone else but herself, noted ABC 4 WOAY.

Sloan confirmed that the physical evidence found at the crime scene matched the things written on Myers' notes. He also encouraged anyone with mental health problems to seek help. The National Suicide Prevention Lifeline hotline is 800-273-8255.