No sign of woman missing on Grand Canyon ri..

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GRAND CANYON NATIONAL PARK, Ariz. • Authorities are scaling back the search for a Colorado woman reported missing from a private river trip in Grand Canyon National Park.

Park rangers say 21-year-old Kaitlin Anne Kenney of Englewood, Colo., was last seen Friday night at her group's camp near Tapeats Creek on the north side of the Colorado River.

Kenney was reported missing Saturday, and helicopter and ground crews searched the Tapeats and Deer Creek drainages, Surprise Valley and along the river all weekend. Ground-based crews scoured the Tapeats Creek area again Monday.

But park spokeswoman Shannan Marcak said Tuesday that with no new clues, authorities have decided to scale back the search.

Marcak says efforts will continue in a "limited mode in which rangers and pilots will continue to search for clues when in the area." She says fliers with Kenney's picture remain posted at river trip launch and takeout points.

No sign of woman missing on Grand Canyon river trip