Katherine Harris-Zmudka was 51 when she was last seen on August 12, 2013, near the UC San Diego campus in La Jolla. Her final known interaction was with UC San Diego Police after being stopped for jaywalking while heading toward a bus stop. Earlier in 2013 she was contacted by authorities in San Marcos.

Katherine had previously lived in San Bernardino and Moreno Valley. She is described as 5 feet 5 inches tall, about 115 pounds, with brown hair. It is noted as unusual that she did not remain in contact with family after that date, and despite law enforcement efforts her whereabouts remain unknown and there have been no significant leads.

If anyone saw Katherine around UC San Diego or in San Diego County in August 2013, or has information about where she might have gone after that police contact, please share what you know.