LOS ANGELES (CBSLA/AP) — A plane heading from Los Angeles to Tokyo turned back because an unauthorized person was on board.

An All Nippon Airways Flight 175 left Los Angeles International Airport around 11:30 a.m. Tuesday, but it never arrived at Tokyo’s Narita International Airport.

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Model Chrissy Teigen, who was on the plane with husband John Legend, tweeted that the flight made a U-turn about four hours into the 11-hour flight.

Teigen says passengers were told that someone had managed to board the ANA flight with a United Airlines ticket.

The plane landed at LAX around 7:30 p.m. after eight hours in the air.

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Teigen says police interviewed passengers who were sitting near the person.

Airport police said that there was a “mix-up” that’s been resolved, and the flight has been rescheduled to depart Wednesday.

ANA has not returns calls requesting information on how the mixup occurred.

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