The lawyer for a 17-year-old Connecticut boy charged with stabbing a classmate to death in school on their prom day says he intends to use an insanity defense.
Christopher Plaskon is charged with murdering 16-year-old Maren Sanchez in a hallway at Jonathan Law High School in Milford in April 2014, hours before the junior prom.
Police have said they were looking into whether the attack was related to Sanchez's refusal to be Plaskon's prom date.
"It affected a lot of people especially people our age or those still in high school," said Mike Skehan of Milford.
Plaskon's lawyer, Richard Meehan, released new court documents Monday saying he intends to pursue a defense of "mental disease or defect and/or extreme emotional disturbance." Meehan didn't elaborate.
Meehan has said in court that Plaskon was taking anti-psychotic and anti-anxiety medications.
For the last few months, Plaskon was evaluated by doctors to try to determine his mental state when the horrific incident happened.
Some had a mixed reaction to the news of an insanity plea.
"It could just be a way to get out of any sentencing but to be in that situation he had to feel some type of craziness in him to be willing to do what he did," Skehan said.
Plaskon is due in Milford Superior Court on Tuesday for a pretrial hearing.
Copyright 2015 WFSB (Meredith Corporation). The Associated Press contributed to this report. All rights reserved.