Hamptons police are backing up Alec Baldwin’s account of how he ended up smashing a Range Rover into a tree , while driving with brother Stephen in the Hamptons Monday.

The Emmy-winning “30 Rock” alum, 67, was operating a white 2023 Range Rover with his 59-year-old brother Stephen — father of Hailey Bieber — in the passenger seat, when they “struck a tree on the Eastbound shoulder” of State Route 27, Pantigo Road near Cross Highway, East Hampton Police told TMZ.

Chief Michael Sarlo said that police responded just after noon Monday to the accident, which occurred while Baldwin was “avoiding the turning action of a 2020 Mack commercial truck, registered to National Waste Services out of Bay Shore, NY.”

He attributed the accident in part to “a reaction to an uninvolved vehicle and the

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