The incident took place around 12:15 a.m., Tuesday, July 5 in Hicksville on 16 W Marie St.
According to police, officers responded to a building fire caused by smoldering fireworks left in a dumpster next to the structure, said the Nassau County Police.
Hicksville Fire Department and Westbury Fire Department extinguished the fire.
One firefighter suffered a leg injury and refused medical treatment at the scene.
No other injuries were reported.
The county fire marshal and arson bomb squad Fire responded to investigate the incident.
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