Treat Williams attends the premiere of P12 Films' “The Great Alaskan Race” at ArcLight Hollywood on October 17, 2019 in Hollywood, California.Photo:Rachel Luna/Getty

Treat Williams

Rachel Luna/Getty

The Vermont driver involved in the accident that led toTreat Williams' suddendeathhas entered a plea to the charge.

According to theAssociated Press, 35-year-old Ryan Koss has pleaded not guilty to his role in the June crash during his Monday arraignment at the Criminal Division of Vermont Superior Court in Bennington. He faces up to 15 years in prison if convicted.

The Bennington County State’s Attorney’s office completed its review of the crash involving a motorcycle and a single car last month. He was then charged with “grossly negligent operation with death,” according toa press releasefrom the Vermont State Police.

PEOPLE confirmed on June 12 that Williams died at age 71 hours after he was involved in a motorcycle accident in Vermont. Hesuffered critical injuriesfrom the crash before being airlifted to Albany Medical Center in Albany, New York, where he was pronounced dead.

“He was killed this afternoon. He was making a left or a right [and] a car cut him off,” Williams' agent Barry McPherson told PEOPLE. “I’m just devastated. He was the nicest guy. He was so talented.”

“He was an actor’s actor. Filmmakers loved him. He’s been the heart of the Hollywood since the late 1970s,” he continued. “He was really proud of his performance this year. He’s been so happy with the work that I got him. He’s had a balanced career.”

NEW YORK, NY - MAY 14: Treat Williams and his children, Gil Williams and Ellie Williams visit the set of “White Collar” in Manhattan on May 14, 2012 in New York City. (Photo by Bobby Bank/WireImage)

In anews releaseshared with PEOPLE last month, the Vermont State Police confirmed that the Medical Examiner’s Office in New York determined theEverwoodactor’scause of death as “severe trauma and blood loss.”

“I have known Treat for years, both as a member of this tight-knit community and fellow theater maker. I considered him a friend,” he said, according to theManchester Journal. “I know his family feels his sudden loss even more deeply than I do, and I offer my sincerest condolences to them.”

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source: people.com