John Evodio Nunez, 66, of Livermore, California, vanished after boarding a bus to Tijuana on a business trip to Mexicali on November 29, 1982.

Nunez is described as a Hispanic male, 5 feet 9 inches, about 225 pounds, with black hair and brown eyes. Distinguishing marks include a chest scar from bypass surgery, a long scar on his left leg from an arterial procedure, an indentation on his left elbow from a poorly healed broken arm, and discoloration above his left eye. When last seen he wore a black hat, a beige and green jacket, a black turtleneck, black slacks and a wedding band.

Few details are available about what occurred during the trip and no conclusive leads have been reported. The Livermore Police Department is the contact for anyone with information about John Nunez.