Mom who murdered her three young daughters 'used a fake doctors note to get ...

A Michigan mother who butchered her three young children in the woods last Monday before committing suicide outside her boyfriend's home used a fake doctor's note to get them out of school, police say.

Abrianne Moore, 28, turned up at a her daughters' school in Kent County last week, telling teachers that Alaina Rau, 2, Cassidy Rodery, 6, and Kyrie Rodery, 8, all had doctors appointments.

However Moore secretly had other plans.

Instead, she drove the girls out to a wooded area behind their great-grandparents' home and lured them from the car one-by-one, and executed each of them with a hunting rifle.

Aubrianne Moore, 28, (above) shot her three young daughters and herself on Monday in Cedar Rapids, Michigan, authorities have confirmed. Investigators believe she carried out the shocking triple murder-suicide because she suffered from mental illness

Aubrianne Moore, 28, (above) shot her three young daughters and herself on Monday in Cedar Rapids, Michigan, authorities have confirmed. Investigators believe she carried out the shocking triple murder-suicide because she suffered from mental illness

Moore allegedly brought her three daughters, eight-year-old Kyrie Rodery (center), six-year-old Cassidy Rodery (right) and two-year-old Alaina Rau (left), out to a wooded area near Cedar Springs on Monday and shot them with a hunting rifle. She then loaded the children's bodies back into her car, drove to her boyfriend's home and shot herself

Moore allegedly brought her three daughters, eight-year-old Kyrie Rodery (center), six-year-old Cassidy Rodery (right) and two-year-old Alaina Rau (left), out to a wooded area near Cedar Springs on Monday and shot them with a hunting rifle. She then loaded the children's bodies back into her car, drove to her boyfriend's home and shot herself

She then loaded the children's lifeless bodies back into her car, drove to her boyfriend's home and shot herself. The boyfriend and father of the youngest daughter discovered the gruesome scene an hour and a half later.

The note she handed to school administrators was a forgery, the Kent County Sheriff's Office revealed.

'We don't know what was going through her head, she didn't leave a suicide note or anything like that,' Kent County Sheriff Michelle LaJoye-Young told MLive on Wednesday.

Investigators believe Moore committed triple murder-suicide because she was suffering from mental illness.

'Mom appears to have been struggling with pretty substantial mental health issues,' LaJoye-Young said.

'She had some postings on Facebook and things like that that lead to believe she was paranoid and thought that the kids were in jeopardy somehow. We suspect that led to the events this day.'

Last September, Moore's former social worker filed a

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