Jurgen Yo Knemeyer, 56, was found beaten to death at his Hilltop Road home in Willits, Mendocino County, on August 14, 1999. A deputy responding to a welfare check after a neighbor reported the back door open discovered the body and the death was classified as a homicide.

Knemeyer was a longtime local who worked as a journeyman at California Tile in Ukiah and also cultivated marijuana to supplement his income. Investigators found evidence of cultivation at the residence, and neighbors said a steady flow of visitors had come to the home in the weeks before the killing, prompting questions about possible conflicts connected to the grow.

The Mendocino County Sheriff’s Office sought assistance from the California Department of Justice in 2011 to analyze biological and other evidence, but no suspects have been identified and the case remains unsolved. His daughter Sabrina Knemeyer has spoken publicly about her father and the family continues to seek answers.

If anyone knew Jurgen, saw unusual activity at Hilltop Road in August 1999, or has information that could help, please contact the Mendocino County Sheriff’s Office tip line.