A Coram grandmother was arrested and charged with drunken driving under Leandra’s Law after Suffolk County police said she crashed her car into a parked SUV — while her 11-year-old grandson was in the car with her.

No one was injured.

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Police said Melinda Duncan, 56, was driving her 2014 Ford Focus south on South Coleman Road near Hettys Path in Centereach on Tuesday at 10:35 p.m. when she crashed into a 1999 Chevrolet Suburban that was parked on the shoulder. Responding Sixth Precinct officers then determined Duncan was intoxicated — and made the arrest, charging her with the Leandra’s Law violation.

The law makes it a felony, even on first offense, to drive drunk with a child under the age of 16 in the vehicle.

Duncan now faces arraignment, charged with aggravated DWI and endangering the welfare of a child, Wednesday in First District Court in Central Islip, police said.