GRAND CANYON NATIONAL PARK, Ariz. (AP) 鈥� Authorities continue to search for a Michigan woman reported missing at Grand Canyon National Park.
National Park Service officials said 66-year-old Martha Anne Overholser was last seen at Mather Point on the canyon鈥檚 South Rim on Dec. 10 and later failed to return on a commercial bus tour.
Authorities said Overholser is believed to have walked west from the Mather Point area, possibly towards 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鈥檚 flyer about her on Thursday.
The Associated Press
