BOISE -- The Ada County Coroner's Office has released the name of a Boise man killed in a car wreck early Friday morning.

Jacob Ryan Cecil, 25, died of blunt force trauma, the coroner said. His death has been ruled an accident.

According to the coroner's office, Cecil was riding in the backseat of the car when it wrecked at about 3 a.m. on Fairview Avenue near Bluff Street in Boise.

The vehicle, a blue passenger car, somehow launched over a three-foot wall to land on the front lawn of a business.

Cecil was one of five people in the car. He wasn't wearing a seat belt, and he died at the scene, according to the coroner.

The severity of the surviving crash victims' injuries is unknown. Boise police said the four other people in the car were treated at a local hospital, and one of them has been released.

It's not clear what caused the driver to lose control. Police have asked anyone who witnessed the wreck to contact the department.

Police said they believe alcohol was a factor in the crash. The investigation is ongoing.

The off-ramp from I-184 to Fairview Avenue was shut down to allow crash reconstruct crews to work, but has since been reopened.