Provo, Utah — A judge in Utah County has ruled that Tryston Robert Erickson will stand trial for the alleged murder of his mother and stepfather in March 2023. The decision follows a lengthy judicial process focused on evaluating Erickson’s mental competency to face the charges.
Erickson, now 30, has been charged with two counts of aggravated murder, as well as several other felonies including obstruction of justice, theft, abuse or desecration of a human corpse, and firearm offenses. The charges stem from a wellness check conducted on March 14, 2023, after Jeannie Parker, 50, and Timothy Parker, 58, failed to show up for work. Upon entering their residence, officers discovered the couple’s bodies in a basement bedroom, partially hidden by blankets, having succumbed to gunshot wounds.
Police reported that the scene displayed signs of violence and attempts to conceal evidence. Investigators found multiple firearms, bullet casings, and blood stains throughout the home. Court documents also indicated that Timothy Parker suffered burns on his forearm post-mortem, although the circumstances surrounding this were not disclosed.
Erickson quickly emerged as a suspect. Living in the same home, he was not present when officers arrived, and Jeannie Parker’s car was missing. Tracking phone signals revealed that Jeannie Parker’s device had pinged near Steamboat Springs, Colorado. The subsequent search led authorities to Erickson in Grand County, where he was apprehended after a pursuit while driving the stolen vehicle. During questioning, Erickson reportedly admitted to taking both the car and phone.
Evidence gathered during the investigation revealed that Erickson’s phone contained photographs of the victims taken a day before their bodies were discovered. Additionally, neighbors had observed him in the vicinity of the home prior to the incident, raising suspicions about his activities leading up to the deaths. A message sent from Jeannie Parker’s phone to colleagues indicated she was leaving her job, a claim that surprised those close to her, as it had not been previously discussed.
Tensions within the household reportedly escalated prior to the tragic events, as Timothy Parker allegedly contemplated evicting Erickson, though it remains unclear if formal eviction proceedings were underway at the time of the killings. While these details contribute to the case, prosecutors have yet to establish a clear motive.
The legal proceedings were paused for nearly a year while questions about Erickson’s mental fitness arose. After several evaluations, he was deemed competent to stand trial as of December 2025, allowing the case to resume. With probable cause established, Judge Thomas Low has now cleared the way for formal arraignment.
The upcoming arraignment will provide Erickson the opportunity to enter his plea. He remains in custody as the case transitions from preliminary hearings to a more formal stage, with the next court date set for June 10.
This investigation, which began as a missing persons inquiry, evolved rapidly into a double homicide case, encompassing multiple jurisdictions within a single day. The thorough examination of evidence has included phone records, witness statements, and physical findings from the residence, all of which will be scrutinized as the trial approaches.