Dozens of investigators tasked with determining the origin of Saturday’s brush fires on Long Island have linked the blazes to a backyard in Manorville.

An attempt to make s'mores accidentally sparked the massive brush fires that impacted the East End of Long Island, Suffolk County police said Monday.

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.