Law enforcement authorities are continuing the search for minimum custody inmate Robert Michael Judd.
Judd escaped from Sierra Conservation Center Friday.
Prison spokesman Ben Garcia says authorities are combing the region from Knights Ferry east to the prison near Jamestown looking for signs of the missing inmate.
According to prison officials,he was originally incarcerated for battery on a peace officer with a weapon.
They say a grey sedan was seen in the area of the O´Byrnes Ferry Road correctional facility around the same time Judd disappeared. He has relatives in Bend, Oregon.
Judd is described as a white male, 29 years-old, 5-foot 8-inches tall and about 145 pounds with light brown hair.