Hannah Kobayashi, 31, vanished while on her way to vacation in New York City. Her phone last pinged at LAX on Nov. 11, which is the last time her family heard from her.

Kobayashi was seen in surveillance video around a downtown Los Angeles Metro train station with an unknown person on November 11, her family said.

It’s been more than a week since Hannah Kobayashi missed a flight connection in Los Angeles. After a series of suspicious texts from her phone, the 30-year-old Hawaii woman has gone silent – and her family is desperately trying to find her.