Hannah Kobayashi, the Hawaii woman who’s been missing for more than three weeks after arriving in Los Angeles on a flight from Maui, has been declared a voluntary missing person, Los Angeles police said Monday.

The photographer, 30, has been missing for over three weeks, perplexing investigators. Los Angeles police said they won’t extend the search to Mexico.

The Maui woman was reportedly captured on surveillance video crossing the US border from San Diego into Tijuana, Mexico on the day she disappeared