The OPP in Hearst was called to the scene of a fatal collision over the weekend.
The police investigation determined that three males were in a pickup truck travelling westbound on Champlain Road, South of Hearst when the incident took place.
The OPP had previously reported two of the passengers had been released from the hospital, but only one of them has been and the other remains in serious condition.
The driver of the vehicle, 20-year-old Martin Hebert from Kapuskasing died in the crash.
Police are still investigating the cause of the collision.