FORT PIERCE, FL – Amid the quiet hours of a Florida morning, a series of bizarre events unfolded on a rural stretch of St. Lucie County road, drawing law enforcement officers into what would become a chilling murder investigation.
Deputies first encountered Olson Jean, 41, sprawled in the street, rolling and acting unpredictably, prompting calls from concerned passersby. When approached, Jean seemed disoriented, offering only that he had stopped for a breather before quickly shifting the topic to unrelated explanations about his activities and residence.
Nearby, officers noticed a 2020 Freightliner semi-truck left unattended. Their suspicions grew when Jean initially denied any connection to the vehicle, even as evidence began to point in another direction. Additional checks revealed he maintained a lease on the truck, contradicting his earlier statements and deepening law enforcement’s wariness.
As detectives pressed for details, Jean grew evasive, referring to vague jogging routines and offering inconsistent answers about his origins. His statements did little to allay concerns, and officers decided to investigate further.
The semi-truck, upon closer inspection, displayed visible traces of blood on its exterior. Detectives obtained a search warrant and, inside the vehicle, discovered more disturbing signs. Blood spattered the sleeper cab—the area where long-distance drivers often rest.
A search of the surrounding area turned up two firearms and several magazines placed near a canal: a semi-automatic rifle and a handgun, both hidden as if someone had attempted to discard them without drawing attention.
Once inside the truck, deputies found the body of 32-year-old Wendy Moncion in a storage compartment under the sleep area. The grim discovery was verified by the county medical examiner, who determined Moncion died from a single gunshot wound to the back of the head.
Family members told investigators that Jean and Moncion were cousins and had been traveling together from Georgia to Florida in the days before their encounter with police. Jean, according to relatives, had expressed heightened fears for his safety during the trip, with his mental health reportedly becoming a concern for those close to him.
Moncion was believed to be accompanying Jean to provide support on their journey due to these concerns, relatives said. The last time Moncion contacted family was Jan. 15.
Jean was arrested at the scene and has since been held without bond at the St. Lucie County Jail on first-degree murder charges. As authorities continue to investigate, they are working to determine what precisely led to the deadly altercation inside the truck.
Law enforcement officials have not released a motive for the killing but confirmed that the probe remains ongoing.