The Arizona (Flagstaff) Daily Sun reports that "Five members of a 12-person Swiss tourist group were injured Friday in a flash flood in the same canyon where 10 people drowned in a 1997 flash flood."
The tv station ABC15 in Phoenix, however, says it was 3 Swiss and 1 French national who were rescued but on Saturday. Another group of 8 were rescued reportedly from the Corkscrew area of the canyon further south.
This video posted on YouTube shows the slot canyon and why it could be dangerous in a flash flood.