At least three teens are in custody after vandalizing and setting fire to the historic Tarrytown Lighthouse, Westchester County officials said Friday.

Park rangers last week found significant fire damage to one of the lighthouse floors along with broken windows and damage to dozens of historic items — including 35 antique books — inside the structure, according to Westchester County Executive Ken Jenkins’ office.

An initial assessment by the Westchester County Parks Department puts the value of damages at around $100,000. All public tours are suspended as well — after $3.4 million in renovations to the facility were completed just last year .

Located on the eastern shore of the Hudson River, the Tarrytown Lighthouse, sometimes called the Sleepy Hollow Lighthouse, was constructed in 18

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