A decades-old Hicksville doughnut shop is shuttered after a smoky fire early Thursday heavily damaged a two-story commercial building that housed the business, authorities said.

Maria Kefalas said her family had operated the House of Donuts at the location since 1977 and "never in all of these years" had they experienced something like this.

The fire was reported at 12:13 a.m. on Marie Street, just off Broadway and within blocks of the LIRR train station, in the building that also houses Halal Munchies, authorities said. The fire was first reported in the Halal restaurant's basement, said Nassau Chief Fire Marshal Michael Uttaro.

The occupants had fled the building when firefighters arrived, police said.

Kefalas said her family was at home when they learned about the fire around 3:

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