LONGMONT, Colo. — A teen accused in the stabbing death of a 20-year-old woman is expected to enter a plea in the case on May 3, according to Shannon Carbone with the Boulder District Attorney's Office. 

Aiden Von Grabow, 15, at the time of the killing, is accused of stabbing Longmont resident Makayla Grote to death in November 2017. 

Von Grabow also had a "kill list," according to court testimony. It was a list of names, including some of his friends, and descriptions of how he'd murder them. Von Grabow even threatened Grote's younger sister. 

RELATED: Family members testify about the effects of teen's "kill list" on their children in court

RELATED: Police questioned teen about 'kill list' month before he allegedly stabbed woman to death

“Torture till she begs for mercy,” the note read, according to testimony from Longmont Police Detective Brian Dean. “Make her fight, then take hostage.”

Court testimony from a police officer said Von Grabow's mother called police days before the attack on Grote saying he'd kicked in a door and came at her with a knife.

She also allegedly told investigators her son had a bunch of weapons, including Molotov cocktails and a machete. That was just a day before the teen allegedly killed Grote.

A judge decided Von Grabow would be tried in district court as an adult early last month. 

RELATED: Teen who stabbed woman to death, had a "kill list" to be tried as an adult

He was charged with:

  • Count One - First Degree Murder (F1)
  • Count Two - Criminal Attempt to Commit Murder in the First Degree (F2)
  • Count Three - Criminal Attempt to Commit Murder in the First Degree (F2)
  • Count Four - Criminal Attempt to Commit Murder in the First Degree (F2)
  • Count Five - Criminal Attempt to Commit First Degree Arson (F4)
  • Count Six - Criminal Extortion (F4)
  • Count Seven – Menacing (F5)
  • Count Eight – Menacing (F5)
  • Count Nine – Stalking (F5)
  • Count Ten – Stalking (F5)
  • Count Eleven – Stalking (F5)
  • Count Twelve - Third Degree Assault – At-Risk Person (F6)
  • Count Thirteen – Criminal Mischief (M2)
  • Count Fourteen – Harassment (M3)
  • Counts Fifteen, Sixteen, Seventeen and Eighteen – Crime of Violence (SE)

On Friday, Carbone said, "the people and the defendant have reached a resolution in this matter."

Von Grabow is expected to enter a plea during a 9 a.m. hearing on May 3, followed by sentencing. The details of the plea agreement have not been released.

According to the release, the prosecution talked with the victims and family members before the resolution was reached.

SUGGESTED VIDEOS | Local stories from 9NEWS