A man awaiting trial on a felony assault charge in connection with a high-speed car crash into a Grants Pass gas station in February has died.

Jackson Nicklaus Mattock, 24, of Grants Pass was free on conditional release pending trial in Josephine County Circuit Court on charges of felony third-degree assault as well as DUII, reckless endangerment, reckless driving and second-degree criminal mischief.