A plea agreement was filed in the case of a Mooresville teen who was charged with plotting a school shooting on Valentine’s Day earlier this year.
Trinity Shockley, 18, is facing charges of conspiracy to commit murder and two felony charges of intimidation after an investigation revealed the Mooresville High School student had spent a year planning the potential school shooting.
The agreement filed on Oct. 27, 2025, would see Shockley plead guilty to one count of conspiracy to commit murder, which is a level 2 felony, and have the state dismiss the other two charges of intimidation, according to court documents.
A person who is convicted of a Level 2 felony could face a prison sentence between 10 to 30 years, according to Indiana law.
As part of the plea agreement, Shockley’s attorney is requesting the teen serve no more than 12.5 years in jail and no more than 5 years on probation, according to court documents.
As a condition of the probation, Shockley would be required to meet with mental health professionals, be banned from all Morgan County school properties and she would not be allowed to search for any material related to school shootings, according to court documents.
Morgan County Judge Dakota VanLeeuwen took Shockley’s agreement under advisement and is expected to rule on the plea in November.
Mooresville school investigation
On Feb. 11, 2025, the FBI received a tip from someone stating their friend was planning a shooting on Valentine’s Day, and had access to an AR-15 rifle.
Investigators traced the messages on social media apps Snapchat and Discord back to Shockley, who discussed buying a bulletproof vest and sent pictures of firearm magazines. Investigators found several messages backing up the claim that Shockley had desires to shoot up the high school, according to court documents.
In several messages, Shockley shared their admiration for other infamous school shooters like Nicholas Cruz and Dylan Roof.
After she was arrested, Shockley told police that she had been bullied and teased after being hit by a suspected drunk driver in 2022, which left her with a fractured skull.
Shockley tried to receive mental health resources, but her father barred her from receiving help. Two weeks after turning 18, officials said, Shockey signed up for mental health assistance, according to court records.
Noe Padilla is a public safety reporter for IndyStar. Contact him at npadilla@indystar.com, follow him on X @1NoePadilla or on Bluesky @noepadilla.bsky.social.
This article originally appeared on Indianapolis Star: Plea agreement filed for Mooresville high schooler accused of plotting school shooting
Reporting by Noe Padilla, Indianapolis Star / Indianapolis Star
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