Suffolk County Fire, Rescue and Emergency Services Commissioner Rudy Sunderman said the fire will not be considered completely "contained" until 10-foot breaks are built around the full perimeter of the fire, where combustible materials and elements are removed to prevent it from reigniting and spreading.

Arson could be the cause of several wind-driven brush fires that burned on New York’s Long Island over the weekend, injuring two firefighters and sending large smoke plumes into the air, officials said.

At least two commercial structures have burned down, Suffolk County officials said. One firefighter suffered second-degree burns in the blazes.

The last of four blazes that began in Suffolk County on Saturday has been put out, but Long Island and the Hudson Valley still faced a high fire risk on Sunday, officials said.

New York Gov. Kathy Hochul declared a state of emergency on Saturday as crews battled brush fires on Long Island. She said 100,000 N95 masks will be sent to the impacted area.