DALLAS -

A suspicious device found on an airplane caused Dallas Love Field to be evacuated for nearly an hour before authorities determined it was a false alarm.

The device was found Sunday by a Southwest Airlines crew member. The device was a robot and it was left on an empty plane getting ready to fly to Amarillo.

Five gates were evacuated for nearly an hour as police investigated. It turns out the robot was a student's science project.

The student accidentally forgot it on the plane. Operations at the airport are now back to normal.