Is Lindbergh baby’s kidnapper on the prowl?

Some who work in the Hunterdon County Courthouse in Flemington say the ghost of Bruno Hauptmann is flipping on the courthouse's lights each night.

The peculiar happenings have been going on since renovations started months ago to make the courthouse look like it did in 1935, when Hauptmann was convicted there of kidnapping and killing the toddler son of Charles Lindbergh.

"It's Hauptmann's ghost," county Administrator Cindy Yard told the Sunday Star-Ledger.

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But county architect Frank Bell says the courthouse's new electricity system is the likely culprit.

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The renovation included sensors that shut off the lights when no one is in those areas of the building.

"These are infrared sensors, and it's a very sensitive system" that reacts when air currents shift from a heating or cooling system starting up, Bell said.