Atlanta police say they’re searching for a woman who disappeared after she failed to make her connecting flight at Hartsfield-Jackson Atlanta International Airport.

Police say Anna Giannini’s flight from Milan, Italy, landed in Atlanta 5:10 p.m. Sunday.

Atlanta police said in a missing person’s bulletin that Giannini was expected to take a connecting flight to Albuquerque, New Mexico, but didn’t arrive there.

Police say she hasn’t been heard from since then.

Police are uncertain whether the 32-year-old woman got on another flight or how she left the airport, which is the world’s busiest.