Tokyo-bound flight diverted back to LAX after 'unauthorized person' discovered on plane

LOS ANGELES -- A flight bound for Tokyo's Narita Airport Tuesday made a u-turn back to Los Angeles International Airport after an "unauthorized person" was discovered aboard in an apparent mix-up.

According to LAX Airport Police, officers were told to have a unit and supervisors on scene when the plane, flight ANA 175, arrives back in Los Angeles.

Police said the return of the Tokyo-bound flight was due to a "mix up and was straightened up," and the plane will be re-scheduled to depart Wednesday morning.

Model Chrissy Teigen, who was aboard the flight, tweeted that she had been on the plane for four hours when it turned around midair.

"A flying first for me: 4 hours into an 11 hour flight and we are turning around because we have a passenger who isn't supposed to be on this plane. Why...why do we all gotta go back, I do not know," Teigen said in a tweet.

Teigen went on to tweet that she was unsure of exactly what had taken place on the flight that caused the plane to turn around. "This person must be mortified though," Teigen tweeted.

According to Teigen, passengers were told that the person in question had a ticket on an entirely different airline.

Teigen said passengers were held on the plane for at least 20 minutes after it landed for police to conduct interviews with passengers.

The plane took off from LAX at 11:36 a.m. Tuesday and landed back at LAX at 7:32 p.m. The flight's total duration was recorded at seven hours and 56 minutes.