Aviation buffs have reported seeing a small plane circling over the Twin Cities, sharing the sighting on a Facebook page for aircraft watchers.
An Internet service that tracks flight data shows that the plane, with tail number N361DB, was in the Chicago area earlier this month, and has since made four extensive flights over the Twin Cities.
They started last week, on May 21, May 22 and Saturday night. There was another flight Thursday.
Here are the four flight paths, as tracked by the Flightradar24 website. You can see a more extensive list here.
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