Mooresville, IN – Authorities have released alarming details regarding an 18-year-old Indiana teenager accused of plotting a Valentine’s Day mass shooting at Mooresville High School.

Court documents reveal the suspect, Trinity Shockley, allegedly idolized Parkland school shooter Nikolas Cruz, harbored homicidal intentions, and had been planning the attack for at least a year.

According to a police affidavit, Shockley—who identifies as a transgender male and goes by the name Dex—expressed a desire to kill others and was fixated on Cruz, even carrying a heart-shaped locket with his photo.

The Mooresville Metropolitan Police Department received a tip from the FBI on February 11, 2025, regarding an individual allegedly planning a school shooting.

Investigators identified Shockley as a suspect and executed a search warrant at their residence in collaboration with Mooresville School Police and the Morgan County Sheriff’s Office.

Authorities took Shockley into custody, and on February 13, prosecutors charged them with:

• Conspiracy to Commit Murder
• Two Counts of Intimidation with a Threat to Commit Terrorism

The FBI’s tipster reportedly informed police that Shockley had access to an AR-15 rifle and had recently purchased a bulletproof vest.

Shockley allegedly told the tipster that they intended to kill their best friend first before carrying out a broader attack.

During a police interview, Shockley allegedly admitted to being “emotionally attached” to Cruz and wanted to prove themselves as his “number one fan.”

Authorities say Shockley believed that people “should value their everyday life” because “you never know when you could die.”

Despite making extensive plans, Shockley allegedly hesitated when envisioning their own arrest and courtroom trial, stating that seeing police officers made them realize they “did not want this”.

During the search of Shockley’s bedroom, investigators discovered a collage of mass shooters, including:

• Nikolas Cruz (2018 Parkland school shooter)
• Dylann Roof (2015 Charleston church shooter)
• Randy Stair (2017 Pennsylvania supermarket shooter)

In addition, Shockley’s backpack contained three notebooks with disturbing imagery and messages, including swastikas, violent phrases such as “Kill,” “Bang,” and “I hate you all, DIE DIE DIE”.

The affidavit states that Shockley repeatedly sought mental health treatment through the school, but their father refused to allow access to professional help.

A school counselor, Miss Roscoe, reportedly told investigators that Shockley’s father “did not believe in mental health treatment” and dismissed concerns about his child’s psychological state.

The document also indicates that Shockley was grieving the loss of their mother and struggling with the aftermath of a traumatic accident, in which a drunk driver hit their vehicle and later died by suicide.

Both local and federal authorities continue to investigate the case. Shockley remains in police custody, and no additional information has been released regarding potential further charges.