Inset: Tyler Lachmann (KOLD/YouTube). Background: The Arizona neighborhood where the conflict with Tyler Lachmann’s parents unfolded, reportedly at his hands (Google Maps).
A tragic incident in Arizona unfolded as a woman tended to her severely injured husband, placing him in bed after their son allegedly assaulted them unexpectedly. Despite checking on him through the night and dressing him in comfortable pants, she discovered him lifeless the next morning, law enforcement reports state.
The couple’s son, Tyler Lachmann, 39, has been accused of viciously attacking both parents, including slamming his mother’s head against the concrete during the incident on June 28 at their Tucson residence. He faces charges of first-degree murder and abuse of a vulnerable adult.
A legal document accessed by Law&Crime reveals that the 72-year-old mother initially misled authorities about a burglary when she called in her husband’s death, aiming to shield her son Lachmann with this false account.
Prosecutors allege that Lachmann was previously on conditional release due to another felony case. Additionally, he has a pending charge for allegedly pointing a firearm at his girlfriend’s mother on April 29, coupled with a threatening statement. His mother has informed the prosecution about her son’s struggles with mental health issues.
“On the night of the 28th of June, 2026, without provocation, Tyler attacked [his parents],” the complaint alleges. Lachmann was “repeatedly punching” his mom and “slamming her head on the concrete” before turning his attention to his father, per the complaint.
“Tyler went after [his father] as well when the three of them were in the kitchen,” the complaint says. “When the assault stopped, [the mother] was able to help [the father] to his bed and she took his shirt off and changed his pants to sweatpants.”
Prosecutors say Lachmann’s mom “checked on” his father “throughout the night” before going to bed. “In the morning, [the mother] noticed that [the father] has stopped breathing and said that he was cold to the touch,” the complaint says.
Police and paramedics responded after the mom called 911. Paramedics declared Lachmann’s dad dead at the scene. Pima County sheriff’s deputies arrived and were told by Lachmann’s mom that they were “robbed and assaulted by two masked men,” according to the complaint.
“Both [parents] had numerous injuries to their face, head, and arms consistent with an assault,” the complaint says. “An interview was conducted with [the mom] where she initially repeated the statement of two masked men, however, during a follow up interview stated that she had made those statements to protect her son.”
Lachmann is scheduled to appear in court for a bond hearing on July 6 and a preliminary hearing on July 10. He is being held without bond.