Arizona plane crashes occurred Sunday and left six people dead. Two small Arizona plane crashes surprisingly occurred consecutively in northern Arizona, with one even sparking a wildfire, reports authorities.

One plane from the Arizona plane crashes was first confirmed by the Yavapai County Sheriff's Office. Four died in the first plane crash near Sedona. According to the Federal Aviation Administration, hikers in the Bear Mountain area first reported the crash which was followed by a fire around 3 p.m. PDT Sunday.

Fire crews responded to the single-engine plane crash about 6 p.m. in Fay Canyon, said the sheriff's office. Helicopters and ground crews reportedly as well to this of crash.

Then, approximately 3 hours later, the United States Forest Service found the wreckage from a single-engine plane, reports Fox News.

The second one of the Arizona plane crashes reported Sunday, authorities found this small plane crash in northern Arizona's Mohave County near the Utah border. According to the Associated Press, this crash killed two people.

According to Salt Lake City's KSL-TV, Sgt. John T. Bottoms of the Arizona Department of Public Safety reported this one of the Arizona plane crashes as having occurred about 6:30 PDT.

The FAA said the plane went down "under unknown circumstances" while it was allegedly on fire.

According to Bottoms, crews hiked to reach the plane which was on a ledge. They reportedly used water backpacks to extinguish the blaze from this one of the Arizona plane crashes.

By Sunday, Kansas.com reports that there was still no word on the identities of any of the Arizona plane crashes, nor the cause of the crashes.

Officials reportedly told the Associated Press that access to the crash site was difficult since there was uneven terrain and a nearby fire from the Arizona plane crashes which needed to be extinguished as well

As of 7 p.m. Sunday, the fire had already burned 25 acres and was 0 percent contained. In response to the fire from one of the Arizona plane crashes Sunday evening, two helicopters, two engines, one fuels crew and the Sedona Fire District were there. On Monday, one hotshot crew and three helicopters reportedly arrived.

Fox News said smoke was visible around Williams, Flagstaff and Sedona.

Arizona plane crashes which happened consecutively are exceptionally rare. According to the AP, the FAA and the National Transportation Safety Board will be investigating the reason for both crashes.