All four Long Island brush fires that sent soaring plumes of smoke into the air had been contained by Sunday afternoon, authorities said.

There is an investigation into possible arson after firefighters knocked down the last of four wildfires that began in Suffolk County on Saturday. Those blazes prompted a State of Emergency, and on Sunday crews were working to prevent any further spread.

New York Gov. Kathy Hochul declared a state of emergency Saturday afternoon as dozens of fire departments responded to Long Island’s Pine Barrens to gain control of massive brush fires fueled by strong winds.