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.

Larie Pidgeon, the aunt of the missing woman, previously told PEOPLE that her niece never mentioned plans to travel to Mexico

Missing' Maui woman Hannah Kobayashi has been seen in surveillance footage buying a ticket to Mexico after vanishing almost a month ago. Hannah vanished after travelling from Hawaii to LAX on a planned trip of a lifetime to NYC.