Nassau County police have reopened a section of Long Beach Road in Oceanside that had been shut due to heavy smoke coming from a laundromat.

Police closed the half mile stretch of the main thoroughfare between Howard Place and Franklin Place shortly after 4 p.m. to clear traffic for fire equipment to respond.

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Firefighters found nothing ablaze, but said an oil burner emergency caused billowing smoke to pour from the building into the street.

The road was reopened by 5:30 p.m., police said.