Wharton State Forest wildfire that was sparked by July 4 fireworks is 75% contained

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The New Jersey State Forest service says fireworks are to blame for a wildfire that burned thousands of acres in Wharton State Forest in Tabernacle Township. Officials say the fire started late Thursday after fireworks were lit inside the forest, but it wasn't discovered until Friday morning . Tea Time Hill wildfire inside Wharton State Forest. (Photo courtesy: New Jersey Department of Environmental Protection) The wildfire, located near Batona Campground and Apple Pie Hill, reached 4,000 acres. The campground has been evacuated. No structures were threatened and 75% of the fire was contained as of Monday morning. MORE: 'Substantial progress' made containing Wharton State Forest wildfire, officials say According to the New Jersey Department of Environmental Protection, wildfire season in New Jersey has increased noticeably in length during the past decade with major wildfires occurring in February and extending into the summer. Historically, it's been mid-March through mid-May. NJDEP says 99% of wildfires in New Jersey are caused by people, through accidents, carelessness and arson. The remainder are caused by lightning strikes. Officials are reminding visitors that fireworks are banned from all state forests, parks and recreation areas. This includes, but is not limited to, beaches, campgrounds, fields and forested areas. "