SEDONA, Ariz. (AP) -- A federal investigator is combing through the wreckage of a small plane that crashed, killing four people near Sedona.
Authorities aren't sure what caused the single-engine Cessna to crash in a remote canyon Sunday.
National Transportation Safety Board spokesman Keith Holloway said Tuesday that the investigator is collecting radar data, air traffic control communications and any witness accounts.
Meanwhile, a medical examiner is working to confirm the identities of the four. Authorities say they're notifying family members, including some from outside the U.S.
3TV has learned the names of the victims but is only releasing the names of the two from Arizona.
An online prayer request posted by a religious organization has identified the victims as Levi Wallace, of Arizona and Jonathan McGeary, of Arizona. The prayer request says the other victims are from Canada and Germany.
Authorities have not confirmed the names at this time.
According to information posted on the organization's website, the victims attended church Sunday morning in Flagstaff then went on a short flight to Sedona when their plane went down.
The single-engine plane crashed in Fay Canyon northwest of Sedona.
Yavapai County Sheriff's Office spokesman Dwight D'Evelyn said the crash was reported by hikers in the Bear Mountain area.
It's not clear who was flying the plane.
Plane crash near Sedona kills 4, sparks wildfire
The plane crash was one of two in northern Arizona that happened hours apart.
Holloway says a crew is recovering the wreckage of a single-engine Cessna that crashed near the Arizona-Utah border, landing on a ledge south of the Virgin River Gorge. Two teenage brothers from Clinton, Utah, died.
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