A teen accused of stabbing a Longmont woman to death and planning to kill others on his “death list” pleaded not guilty Thursday, though that may change to not guilty by reason of insanity following mental examinations.
Aiden von Grabow, 16, faces a charge of first-degree murder after deliberation, a Class 1 felony that carries a mandatory life sentence with a chance for parole after 40 years if he is convicted.
His trial is tentatively set for December.
He also faces three charges of attempted first-degree murder after deliberation — extreme risk; one charge of attempted first-degree arson; one charge of extortion; two charges of felony menacing; three charges of stalking by threatening and following someone; one charge of third-degree assault of an at-risk person; one charge of criminal mischief; and one charge of harassment by telephone.
Von Grabow is accused of killing Makayla Grote, 20, at her apartment in Longmont on Nov. 18. Police believe he intended to kill Grote’s younger sister, who prosecutors say was on his “death list.”
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