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

New York Gov. Kathy Hochul declared a state of emergency Saturday after several wind-driven brush fires broke out in New York’s Long Island, sending large smoke plumes into the air and shutting down a highway.

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.