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The wildfires began accidentally when someone in Suffolk County tried to light a fire to make s’mores, officials said. They were fully contained by Monday.

March 10, 2025, 5:59 p.m. ET
The wildfires that broke out on Long Island Saturday afternoon and spread over hundreds of acres appeared to be accidental, caused by a failed attempt to make s’mores in a backyard, local officials said on Monday.
The preliminary determination came after detectives with the Suffolk County Police Department conducted an investigation into the cause of the fires, interviewing 911 callers and using drones and helicopters to determine whether arson had played a role.
What started as a backyard fire in Manorville, near Sunrise Highway on Long Island’s South Shore, became several blazes as strong winds contributed to the embers’ spread, officials said at a news conference on Monday. The fires were under control by Sunday morning and were 100 percent contained on Monday, said Amanda Lefton, the acting commissioner of the New York State Department of Environmental Conservation.
Kevin Catalina, the Suffolk County police commissioner, said that around 9:30 a.m. on Saturday, a person in Manorville was trying to make s’mores but was initially unable to light a fire because of the wind. The person used cardboard to light the fire, he said, and soon the backyard area went up in flames.
That fire was put out within an hour, the commissioner said, but a few hours later, another fire was reported less than a quarter mile southeast of the initial fire. “The wind was blowing very strongly from the northwest, so that path makes perfect sense,” he said, adding that two additional fires were reported later.
“It is believed that the embers from each fire traveled and continuously started more fires,” he said.