Parolee boards plane without ticket at San Diego airport

A 38-year-old parolee is back in jail after being arrested on suspicion of walking through a security door and boarding a United Airlines plane without a ticket at the commuter terminal in San Diego's Lindbergh Field.

Marc Duncan is being held on suspicion of parole violation, which is a felony, and of two misdemeanors: entering an airport restricted zone, and avoiding the screening process. He is set to be arraigned Thursday in San Diego County Superior Court.

Duncan allegedly opened a security door and walked onto a plane Tuesday scheduled for a flight to Los Angeles. A security guard, hearing the alarm, ran to the location; meanwhile, flight attendants noted that the plane had one more passenger than listed on the manifest.

Duncan, found in the plane's bathroom, was arrested without incident before takeoff. He had been released from jail Monday after serving time on theft charges.

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-- Tony Perry in San Diego