Del Norte County Sheriff’s detectives are still actively investigating the March 2018 disappearance of Harbor, Oregon resident Max Greenfield, last seen in Smith River.

Sheriff’s Cmdr. Bill Steven said Friday that he could not divulge further details about the investigation but detectives with the sheriff’s office had enlisted his help as late as last week.

“They are aggressively following this,” Steven said. “They’re working late and they have not let that one go. This has, by no means, gone unattended and they are still very active on this case.”

Greenfield, who was 25 years old at the time of his disappearance, was last seen at Lucky 7 Casino in Smith River in the early morning hours of March 18. Video surveillance shows Greenfield walking into the casino at 1 a.m. At 1:50 a.m. March 18, Greenfield was seen walking around to the front of the casino, where he met with a white adult male, with whom he spoke for several minutes.

The two were then seen walking south across the parking lot near U.S. 101 until they walked out of the camera’s range.

Since then, Greenfield’s sister, Tonya Brown, has led several searches for her brother. The Del Norte County Sheriff’s Office began treating Greenfield’s disappearance as a homicide in July.

Greenfield is a white adult male, about 6 feet tall and weighing about 160 pounds, with brown hair, blue eyes and a skeleton key tattoo on his left forearm. He was last seen wearing black jeans, a dark colored t-shirt, a black jacket and a black beanie and was carrying his duffel bag.

Anyone with any information about Greenfield’s whereabouts is asked to call Det. Jerrin Gill at 707-465-2468.

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