GRAND CANYON NATIONAL PARK, Ariz. — Authorities continue to search for a Michigan woman reported missing in Grand Canyon National Park.
National Park Service officials said 66-year-old Martha Anne Overholser was last seen at Mather Point on the South Rim of the canyon on Dec. 10 and later did not return for a commercial bus tour.
Authorities said Overholser is believed to have walked west from the Mather Point area, possibly toward the Bright Angel Lodge or Hermits Rest.
Overholser is a resident of Sault Ste. Marie in Michigan, near the Canadian border.
Park officials released a missing person flyer about her on Thursday.