A multi-vehicle crash on a Long Island expressway Sunday morning killed five people, including Scott Martella — a former aide to New York Governor Andrew Cuomo — and a ten-year-old boy. Six others were injured, officials said.

The accident occurred around 9:30 a.m. Sunday when an out-of-control Subaru Outback crashed into Martella’s Honda and another BMW on a major expressway near Manorville.

Martella, who was behind the wheel, died on the spot while his fiancée Shelbi Thurau was injured. The 29-year-old Martella was serving as communication director for Suffolk County executive Steve Bellone.

“Scott was a dedicated, beloved public servant who worked day in and day out to improve the lives of his fellow New Yorkers. Scott was always full of big ideas to help solve the toughest challenges of the day, and he was deeply respected for his strong work ethic, candor and fighting spirit,” Cuomo said in a statement. “Long Island is a better place today because of his service and dedication to the community.”

“Scott Martella dedicated his all too brief life to public service and to helping others. He is known across Long Island as a leader and a great man. The hundreds of people Scott has worked with over the years and the thousands of people whose lives he has positively impacted would describe him as nothing short of an amazing person,” Bellone said in a statement.

“I will miss Scott's smile, his advice, his laugh, his sense of humor, his dedication and his drive,” he added.

The Subaru Outback’s driver Carmelo Pinales and his sister Patricia Pinales were reportedly killed on the spot and Carmelo Pinales’ 10-year-old son Christopher was hospitalized where he gave in to his injuries Sunday night. Two others in the vehicle were hospitalized with non-life threatening injuries.

One passenger in the BMW, Isidore Adelson, died from injuries Sunday night while three others in the car, including Adelson’s wife, received treatment for non-life threatening injuries