Vermont State Police have charged a Williston man for the July shooting death of his stepfather at a Hinesburg trailhead.

Kory Lee George, 31, was in court Friday and pleaded not guilty to charges of suspicion of first-degree murder, burglary and obstruction of justice connected to the July 11 shooting death of his step-father, David Auclair.

Police say George participated in a coordinated effort with his mother to kill Auclair. They say it started when George stole a gun from a family friend. The next day, investigators say George used the stolen gun and shot Auclair 11 times at the LaPlatte Headwaters Town Forest trailhead parking lot.

It took months before charges were filed and Chittenden County State's Attorney Sarah George calls the case complex. "It was a very detailed and planned event. Some parts of it very well planned and other parts, not so much. And sort of teasing out all of the different players and all of the different parts of the plan was complicated," she said.

Angela Auclair, 47, pleaded not guilty this week to two felony charges, including aiding in the commission of first-degree murder. His mother is being held without bail in state prison. She will be back in court next week.

George will continue to be held without bail in federal prison on gun charges.