NORTH COAST, Calif. – The Sonoma County Sheriff's Office is continuing it investigation into the death of a man whose body was found in a shallow grave on Sonoma State University property this past week, releasing new details on Saturday.

The body of Kirk Ryan Kimberly, 18, of Cotati was found in a wooded area on the outskirts of the campus by an employee on Wednesday, as Lake County News has reported.

Kimberly had been reported missing about two weeks before his body was found, officials said.

On Saturday Lt. Tim Duke of the Sonoma County Sheriff's Office Investigations Division offered new details on the case.

Duke said the investigation has revealed that Kimberly was stabbed multiple times by his assailant – or assailants. However, Duke did not release specifics about where Kimberly was wounded, how many wounds he had or the weapon authorities believe was used in the homicide.

“Preliminarily, detectives believe this was not a random act of violence but an isolated incident,” Duke said in his report. “Thus far, detectives have found no affiliation with the homicide and Sonoma State University or its students, other than where the body was found, which was on the property, in an isolated and secluded area of the campus.”

Duke said detectives, as well as other sheriff’s office personnel, are continuing to work around the clock on this case collecting and processing physical, trace and forensic evidence.

Anyone with information about Kimberly disappearance or who has knowledge of this incident is encouraged to call Detective Joseph Horsman of the Sonoma County Sheriff’s Office Violent Crimes Unit at 707-565-2185.